This page lists modifications for weapons found in S.T.A.L.K.E.R.: Call of Pripyat.
Moving bolt section | 600 RU | Provides an increase in rate of fire without overloading other parts through additional recoil. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Polymer recoil buffer | 1,200 RU | A small buffer that takes on some of the recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| Combined two spring return module | 1,800 RU | Installation of this module considerably improves groupings without sacrificing firing speed. | Accuracy | +30% | Requires Calibration Tools. |
| Integrated barrel lifting compensator | 1,800 RU | Introduction of additional compensation holes brings about a significant reduction in recoil. | Recoil | -30% | Requires Calibration Tools. |
| | Long barrel section | 600 RU | Replacement of a regular barrel with a longer one improves accuracy and flatness, but reduces the rate of fire. | Flatness | +10% | Requires Tools for Basic Work. |
| Chrome plating of the internal side of the barrel | 1,200 RU | Chrome plating improves the barrel's life cycle. | Reliability | +15% | Requires Tools for Fine Work. |
| Sinusoidal rifling of barrel | 1,800 RU | Allows barrel heat to be reduced and increases the rate of fire without sacrificing flatness. | Fire Rate | +25% | Requires Calibration Tools. |
| Pneumatic booster installation | 1,800 RU | A pneumatic booster allows some of the recoil to be converted into higher barrel pressure, increasing muzzle velocity. | Flatness | +30% | Requires Calibration Tools. |
| | Polymer pistol frame | 600 RU | A technical replacement of the pistol frame with a lighter one does not affect the weapon's reliability. | Weight | -0.70 kg |
| Changing handle shape with a straight rear section | 1,200 RU | A change in the rear section makes for a more ergonomic handle shape. | Handling | +15% | Requires Tools for Fine Work. |
| A handle with a changed shape with replaceable plates | 1,800 RU | The possibility of choosing a suitable plate makes for a more ergonomic handle shape. | Recoil | -30% | Requires Calibration Tools. |
| Amortization handle | 1,200 RU | An amortization handle reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Double trigger firing mechanism | 600 RU | The trigger is armed by the first shot, with all other shots occurring during automatic trigger arming. | Accuracy | +10% | Requires Tools for Basic Work. |
| Modular firing mechanism | 1,200 RU | A modular firing mechanism provides easier maintenance and parts replacement, as well as certain improvements in ease of use. | Reliability | +15% | Requires Tools for Fine Work. |
| | Increased magazine capacity | 1,800 RU | Magazine capacity increase without increasing weapon part length. | Magazine Size | +4 |
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Moving bolt section | 250 RU | Provides an increase in rate of fire without overloading other parts through additional recoil. | Fire Rate | 10% | Requires Tools for Basic Work. |
| Bolt section barrel closing system | 500 RU | Provides an increase in flatness thanks to improved transfer of impulse to the bullet. | Flatness | +20% | Requires Tools for Fine Work. |
| Installation of a short movement recoil energy use arrangement | 750 RU | A replacement of the automatic parts is more of an optimization than improvement of the gas piston. This considerably improves the weapon's rate of fire. | Accuracy | +30% | Requires Calibration Tools. |
| Slow bolt backward movement system | 500 RU | Softens recoil by slowing down bolt section movement. | Recoil | -20% | Requires Tools for Fine Work. |
| | Long barrel section | 250 RU | Replacement of a regular barrel with a longer one improves accuracy and flatness, but reduces the rate of fire. | Flatness | +10% | Requires Tools for Basic Work. |
| Installation of a barrel with a simplified rifled section | 250 RU | A simplified rifled part is useful for close quarter combat where the emphasis is on the rate of fire rather than accuracy. | Fire Rate | +15% | Requires Tools for Fine Work. |
| Chrome plating of the internal side of the barrel | 500 RU | Chrome plating improves the barrel's life cycle. | Reliability | +15% | Requires Tools for Fine Work. |
| | Polymer pistol frame | 250 RU | A technical replacement of the pistol frame with a lighter one does not affect the weapon's reliability. | Weight | -0.33 kg |
| Ergonomic handle | 500 RU | A more modern and comfortable handle simplifies weapon handling. | Handling | +15% | Requires Tools for Fine Work. |
| Protective body thickeners | 500 RU | Protective thickening flaps should protect the weapon from dirt and impact. | Reliability | +15% | Requires Tools for Fine Work. |
| | Soft release | 250 RU | One of the simplest and most popular modifications, which allows for trigger resistance to be reduced. Simple and handly. | Accuracy | +10% |
| Safe release device | 500 RU | Allows the same pressure to be applied to the trigger from the first to the last shot, which has a positive effect on ease of use. | Accuracy | +20% | Requires Tools for Fine Work. |
| | Increased magazine capacity | 650 RU | Magazine capacity increase without increasing weapon part length. | Magazine Size | +4 |
| Change of caliber to 9x19 | 1,250 RU | A complex, integrated alteration of the weapon's mechanical and automated parts, which allow its caliber to be changed at the cost of reliability. | Caliber | 9x19 | Requires Tools for Fine Work. |
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Moving bolt section | 300 RU | Provides an increase in rate of fire without overloading other parts through additional recoil. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Barrel skew closing system | 600 RU | Improves flatness thanks to improved transfer of impulse to the bullet. | Flatness | +20% | Requires Tools for Fine Work. |
| Integrated barrel lifting compensator | 900 RU | Introduction of additional compensation holes brings about a significant reduction in recoil. | Recoil | -30% | Requires Calibration Tools. |
| Slow bolt backward movement system | 600 RU | Softens recoil by slowing down bolt section movement. | Recoil | -20% | Requires Tools for Fine Work. |
| | Long barrel section | 300 RU | Replacement of a regular barrel with a longer one improves accuracy and flatness, but reduces the rate of fire. | Flatness | +10% | Requires Tools for Basic Work. |
| Chrome plating of the internal side of the barrel | 600 RU | Chrome plating improves the barrel's life cycle. | Reliability | +15% | Requires Tools for Fine Work. |
| Sinusoidal rifling of barrel | 900 RU | Allows barrel heat to be reduced and increases the rate of fire without sacrificing flatness. | Fire Rate | +25% | Requires Calibration Tools. |
| Installation of a barrel with a polygon rifled section | 900 RU | Polygon rifling is usually performed to improve accuracy of sniper rifles. | Flatness | +30% | Requires Calibration Tools. |
| | Polymer pistol frame | 300 RU | A technical replacement of the pistol frame with a lighter one does not affect the weapon's reliability. | Weight | -0.35 kg |
| Ergonomic handle | 600 RU | A more modern and comfortable handle simplifies weapon handling. | Handling | +15% | Requires Tools for Fine Work. |
| Amortization handle | 600 RU | An amortization handle reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Double trigger firing mechanism | 300 RU | The trigger is armed by the first shot, with all other shots occurring during automatic trigger arming. | Accuracy | +10% | Requires Tools for Basic Work. |
| Modular firing mechanism | 600 RU | A modular firing mechanism provides easier maintenance and parts replacement, as well as certain improvements in ease of use. | Reliability | +15% | Requires Tools for Fine Work. |
| "Double" firing mode | 1,000 RU | A new technological development that allows a simple adjustment to change the firing mechanism mode - another step towards better ergonomics and easy weapon adjustment. | Handling | +25% | Requires Calibration Tools. |
| | Increased magazine capacity | 800 RU | Magazine capacity increase without increasing weapon part length. | Magazine Size | +4 | Requires Tools for Fine Work. |
| Change of caliber to 9x19 | 1,500 RU | A complex, integrated alteration of the weapon's mechanical and automated parts, which allow its caliber to be changed at the cost of reliability. | Caliber | 9x19 |
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Moving bolt section | 300 RU | Provides an increase in rate of fire without overloading other parts through additional recoil. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Bolt section barrel closing system | 600 RU | Provides an increase in flatness thanks to improved transfer of impulse to the bullet. | Flatness | +20% | Requires Tools for Fine Work. |
| Installation of a short movement recoil energy use arrangement | 900 RU | A replacement of the automatic parts is more of an optimization than improvement of the gas piston. This considerably improves the weapon's rate of fire. | Accuracy | +30% | Requires Calibration Tools. |
| Slow bolt backward movement system | 600 RU | Softens recoil by slowing down bolt section movement. | Recoil | -20% | Requires Tools for Fine Work. |
| | Shortened barrel section | 300 RU | A more technological shortened barrel improves the weapon's rate of fire without sacrificing flatness and accuracy. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Transferring the barrel compensator/flash reducer onto the frame | 600 RU | Unloading the barrel allows recoil to be reduced considerably. | Recoil | -20% | Requires Tools for Fine Work. |
| Sinusoidal rifling of barrel | 900 RU | Allows barrel heat to be reduced and increases the rate of fire without sacrificing flatness. | Fire Rate | +25% | Requires Calibration Tools. |
| Chrome plating of the internal side of the barrel | 600 RU | Chrome plating improves the barrel's life cycle. | Reliability | +15% | Requires Tools for Fine Work. |
| | Polymer pistol frame | 300 RU | A technical replacement of the pistol frame with a lighter one does not affect the weapon's reliability. | Weight | -0.40 kg |
| Ergonomic handle | 600 RU | A more modern and comfortable handle simplifies weapon handling. | Handling | +15% | Requires Tools for Fine Work. |
| Amortization handle | 600 RU | An amortization handle reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Double trigger firing mechanism | 300 RU | The trigger is armed by the first shot, with all other shots occurring during automatic trigger arming. | Accuracy | +10% | Requires Tools for Basic Work. |
| Modular firing mechanism | 600 RU | A modular firing mechanism provides easier maintenance and parts replacement, as well as certain improvements in ease of use. | Reliability | +15% | Requires Tools for Fine Work. |
| | Increased magazine capacity | 1,200 RU | Magazine capacity increase without increasing weapon part length. | Magazine Size | +4 |
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Moving bolt section | 300 RU | Provides an increase in rate of fire without overloading other parts through additional recoil. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Reinforced and fully closed bolt | 600 RU | A heavier and closed bolt prevents the pistol's bolt section from malfunctioning. | Reliability | +15% | Requires Tools for Fine Work. |
| Fully automatic firing mode | 1,900 RU | Modernization of the pistol's automatic parts suitable for automatic fire. | Automatic Fire Mode | Requires Calibration Tools. |
| Installation of a closing insert with a shaped spiral groove | 600 RU | Installation of a steel insert helps to reduce recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Shortened barrel section | 300 RU | A more technological shortened barrel improves the weapon's rate of fire without sacrificing flatness and accuracy. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Additional threaded canals in the barrel | 600 RU | Installation of a barrel with additional threaded canals improves bullet speed and weapon accuracy at the cost of a considerable increase in recoil. | Flatness | +20% | Requires Tools for Fine Work. |
| Sinusoidal rifling of barrel | 900 RU | Allows barrel heat to be reduced and increases the rate of fire without sacrificing flatness. | Fire Rate | +25% | Requires Calibration Tools. |
| Chrome plating of the internal side of the barrel | 600 RU | Chrome plating improves the barrel's life cycle. | Reliability | +15% | Requires Tools for Fine Work. |
| | Solid steel frame | 300 RU | In this case the frame is more reliable than composite. | Reliability | +10% | Requires Tools for Basic Work. |
| Changing handle shape with a straight rear section | 600 RU | A change in the rear section makes for a more ergonomic handle shape. | Handling | +15% | Requires Tools for Fine Work. |
| Amortization handle | 600 RU | An amortization handle reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Soft release | 300 RU | One of the simplest and most popular modifications, which allows for trigger resistance to be reduced. Simple and handly. | Accuracy | +10% |
| Increased trigger bolt head | 600 RU | A modern modification which prevents the weapon from bolt section detachment. | Reliability | +15% | Requires Tools for Fine Work. |
| | External threading of the barrel | 700 RU | External threading allows a silencer to be installed. | Silencer |
| Change of caliber to 9x19 | 1,500 RU | A complex, integrated alteration of the weapon's mechanical and automated parts, which allow its caliber to be changed at the cost of reliability. | Caliber | 9x19 | Requires Tools for Fine Work. |
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Moving bolt section | 200 RU | Provides an increase in rate of fire without overloading other parts through additional recoil. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Bolt section barrel closing system | 400 RU | Provides an increase in flatness thanks to improved transfer of impulse to the bullet. | Flatness | +20% | Requires Tools for Fine Work. |
| Installation of a short bolt movement arrangement | 600 RU | Short movement considerably increases the weapon's rate of fire without sacrificing flatness. | Fire Rate | +25% | Requires Calibration Tools. |
| Slow bolt backward movement system | 400 RU | Softens recoil by slowing down bolt section movement. | Recoil | -20% | Requires Tools for Fine Work. |
| | Long barrel section | 200 RU | Replacement of a regular barrel with a longer one improves accuracy and flatness, but reduces the rate of fire. | Flatness | +10% | Requires Tools for Basic Work. |
| Chrome plating of the internal side of the barrel | 400 RU | Chrome plating improves the barrel's life cycle. | Reliability | +15% | Requires Tools for Fine Work. |
| | Polymer pistol frame | 200 RU | A technical replacement of the pistol frame with a lighter one does not affect the weapon's reliability. | Weight | -0.35 kg |
| Ergonomic handle | 400 RU | A more modern and comfortable handle simplifies weapon handling. | Handling | +15% | Requires Tools for Fine Work. |
| Amortization handle | 400 RU | An amortization handle reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Soft release | 200 RU | One of the simplest and most popular modifications, which allows for trigger resistance to be reduced. Simple and handly. | Accuracy | +10% |
| Firing mechanism with partial pre-arming | 400 RU | Partial arming allows firing accuracy to be improved. | Accuracy | +20% | Requires Tools for Fine Work. |
| | Increased magazine capacity | 350 RU | Magazine capacity increase without increasing weapon part length. | Magazine Size | +4 |
| Change of caliber to 9x19 | 550 RU | A complex, integrated alteration of the weapon's mechanical and automated parts, which allow its caliber to be changed at the cost of reliability. | Caliber | 9x19 | Requires Tools for Fine Work. |
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Moving bolt section | 250 RU | Provides an increase in rate of fire without overloading other parts through additional recoil. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Protective bolt section sputter | 500 RU | Sputter protects weapons from early wear. | Reliability | +15% | Requires Tools for Fine Work. |
| Installation of a long barrel movement arrangement | 750 RU | Long bolt movement gives bullet greater energy. | Flatness | +30% | Requires Calibration Tools. |
| Slow bolt backward movement system | 500 RU | Softens recoil by slowing down bolt section movement. | Recoil | -20% | Requires Tools for Fine Work. |
| | Perforated barrel section | 250 RU | Barrel perforation causes a reduction in recoil with gas escaping via special holes. | Recoil | -10% | Requires Tools for Basic Work. |
| Addition of rubber separators | 500 RU | Separators take on some of the recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Polymer pistol frame | 250 RU | A technical replacement of the pistol frame with a lighter one does not affect the weapon's reliability. | Weight | -0.20 |
| Ergonomic handle | 500 RU | A more modern and comfortable handle simplifies weapon handling. | Handling | +15% | Requires Tools for Fine Work. |
| Installation of a return spring amortization component | 750 RU | This modification is only possible if a return spring has been installed into the handle. | Accuracy | +30% | Requires Calibration Tools. |
| | Soft release | 250 RU | One of the simplest and most popular modifications, which allows for trigger resistance to be reduced. Simple and handly. | Accuracy | +10% |
| Firing mechanism with partial pre-arming | 500 RU | Partial arming allows firing accuracy to be improved. | Accuracy | +20% | Requires Tools for Fine Work. |
| | Increased magazine capacity | 650 RU | Magazine capacity increase without increasing weapon part length. | Magazine Size | +4 |
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Moving bolt section | 500 RU | Provides an increase in rate of fire without overloading other parts through additional recoil. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Protective bolt section sputter | 900 RU | Sputter protects weapons from early wear. | Reliability | +15% | Requires Tools for Fine Work. |
| Three round burst firing mode | 3,000 RU | Improvement of the pistol's automatic parts suitable for three round burst fire. | 3-Round Burst Mode | Requires Calibration Tools. |
| Increased bolt movement | 900 RU | By increasing bolt movement and reinforcing the return mechanism appropriately, you can improve flatness. | Flatness | +20% | Requires Tools for Fine Work. |
| | Long barrel section | 500 RU | Replacement of a regular barrel with a longer one improves accuracy and flatness, but reduces the rate of fire. | Flatness | +10% | Requires Tools for Basic Work. |
| Chrome plating of the internal side of the barrel | 900 RU | Chrome plating improves the barrel's life cycle. | Reliability | +15% | Requires Tools for Fine Work. |
| Sinusoidal rifling of barrel | 1,300 RU | Allows barrel heat to be reduced and increases the rate of fire without sacrificing flatness. | Fire Rate | +25% | Requires Calibration Tools. |
| Installation of a barrel with a polygon rifled section | 1,300 RU | Polygon rifling is usually performed to improve accuracy of sniper rifles. | Flatness | +30% | Requires Calibration Tools. |
| | Polymer pistol frame | 500 RU | A technical replacement of the pistol frame with a lighter one does not affect the weapon's reliability. | Weight | -0.22 kg |
| Ergonomic handle | 900 RU | A more modern and comfortable handle simplifies weapon handling. | Handling | +15% | Requires Tools for Fine Work. |
| Amortization handle | 900 RU | An amortization handle reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Soft release | 500 RU | One of the simplest and most popular modifications, which allows for trigger resistance to be reduced. Simple and handly. | Accuracy | +10% |
| Modular firing mechanism | 900 RU | A modular firing mechanism provides easier maintenance and parts replacement, as well as certain improvements in ease of use. | Reliability | +15% | Requires Tools for Fine Work. |
| Short movement firing mechanism | 1,300 RU | Once the first shot is fired, half the trigger movement is required to make subsequent shots. | Fire Rate | +25% | Requires Calibration Tools. |
| | Increased magazine capacity | 1,500 RU | Magazine capacity increase without increasing weapon part length. | Magazine Size | +4 |
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Moving bolt section | 600 RU | Provides an increase in rate of fire without overloading other parts through additional recoil. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Polymer recoil buffer | 1,000 RU | A small buffer that takes on some of the recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| Fully automatic firing mode | 3,000 RU | Modernization of the pistol's automatic parts suitable for automatic fire. | Automatic Fire Mode | Requires Calibration Tools. |
| Increased bolt movement | 1,000 RU | By increasing bolt movement and reinforcing the return mechanism appropriately, you can improve flatness. | Flatness | +20% | Requires Tools for Fine Work. |
| | Long barrel section | 600 RU | Replacement of a regular barrel with a longer one improves accuracy and flatness, but reduces the rate of fire. | Flatness | +10% | Requires Tools for Basic Work. |
| Installation of a barrel with a simplified rifled section | 1,000 RU | A simplified rifled part is useful for close quarter combat where the emphasis is on the rate of fire rather than accuracy. | Fire Rate | +15% | Requires Tools for Fine Work. |
| Sinusoidal rifling of barrel | 1,400 RU | Allows barrel heat to be reduced and increases the rate of fire without sacrificing flatness. | Fire Rate | +25% | Requires Calibration Tools. |
| Chrome plating of the internal side of the barrel | 1,000 RU | Chrome plating improves the barrel's life cycle. | Reliability | +15% | Requires Tools for Fine Work. |
| | Titanium frame | 600 RU | An expensive frame for a weapon that will serve a long time. | Reliability | +10% | Requires Tools for Basic Work. |
| Changing handle shape with a straight rear section | 1,000 RU | A change in the rear section makes for a more ergonomic handle shape. | Handling | +15% | Requires Tools for Fine Work. |
| A handle with a changed shape with replaceable plates | 1,400 RU | The possibility of choosing a suitable plate makes for a more ergonomic handle shape. | Recoil | -30% | Requires Calibration Tools. |
| Amortization handle | 1,000 RU | An amortization handle reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Double trigger firing mechanism | 600 RU | The trigger is armed by the first shot, with all other shots occurring during automatic trigger arming. | Accuracy | +10% | Requires Tools for Basic Work. |
| Modular firing mechanism | 1,000 RU | A modular firing mechanism provides easier maintenance and parts replacement, as well as certain improvements in ease of use. | Reliability | +15% | Requires Tools for Fine Work. |
| Installation of an arming component | 1,400 RU | The arming component considerably reduces the amount of pressure required on the trigger, improving accuracy. | Accuracy | +30% | Requires Calibration Tools. |
| | Increased magazine capacity | 1,500 RU | Magazine capacity increase without increasing weapon part length. | Magazine Size | +4 |
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Moving bolt section | 320 RU | Provides an increase in rate of fire without overloading other parts through additional recoil. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Polymer recoil buffer | 640 RU | A small buffer that takes on some of the recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| Three round burst firing mode | 2,000 RU | Improvement of the pistol's automatic parts suitable for three round burst fire. | 3-Round Burst Mode | Requires Calibration Tools. |
| Increased bolt movement | 640 RU | By increasing bolt movement and reinforcing the return mechanism appropriately, you can improve flatness. | Flatness | +20% | Requires Tools for Fine Work. |
| | Long barrel section | 320 RU | Replacement of a regular barrel with a longer one improves accuracy and flatness, but reduces the rate of fire. | Flatness | +10% | Requires Tools for Basic Work. |
| Chrome plating of the internal side of the barrel | 640 RU | Chrome plating improves the barrel's life cycle. | Reliability | +15% | Requires Tools for Fine Work. |
| Sinusoidal rifling of barrel | 960 RU | Allows barrel heat to be reduced and increases the rate of fire without sacrificing flatness. | Fire Rate | +25% | Requires Calibration Tools. |
| Pneumatic booster installation | 960 RU | A pneumatic booster allows some of the recoil to be converted into higher barrel pressure, increasing muzzle velocity. | Flatness | +30% | Requires Calibration Tools. |
| | Titanium frame | 320 RU | An expensive frame for a weapon that will serve a long time. | Reliability | +10% | Requires Tools for Basic Work. |
| Changing handle shape with a straight rear section | 640 RU | A change in the rear section makes for a more ergonomic handle shape. | Handling | +15% | Requires Tools for Fine Work. |
| Amortization handle | 640 RU | An amortization handle reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Double trigger firing mechanism | 320 RU | The trigger is armed by the first shot, with all other shots occurring during automatic trigger arming. | Accuracy | +10% | Requires Tools for Basic Work. |
| Modular firing mechanism | 640 RU | A modular firing mechanism provides easier maintenance and parts replacement, as well as certain improvements in ease of use. | Reliability | +15% | Requires Tools for Fine Work. |
| | External threading of the barrel | 560 RU | External threading allows a silencer to be installed. | Silencer |
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High durability alloy barrel | 500 RU | High durability materials slow down wear and tear of the weapon's barrel. | Reliability | +10% |
| Longer barrel section | 700 RU | Replacement of a regular barrel with a longer one improves flatness. | Flatness | +20% | Requires Tools for Fine Work. |
| Dynamic barrel thickener | 900 RU | Thickening with poly-materials allows barrel pressure to be increased, improving bullet speed. | Accuracy | +30% | Requires Calibration Tools. |
| Longitudinal gas venting canals | 700 RU | The introduction of gas venting canals to the barrel not only prevents it from collecting dirt, but also partially redirects recoil into the barrel itself. | Recoil | -20% | Requires Tools for Fine Work. |
| | Impact-resistant polymer stock | 500 RU | A lighter poly-material allows for the weapon's weight to be reduced. | Weight | -1.00 kg |
| Ergonomic handle | 700 RU | A more modern and comfortable handle simplifies weapon handling. | Handling | +15% | Requires Tools for Fine Work. |
| Addition of an impulse counter-weight | 900 RU | A free-moving impulse counter-weight component, which moves from the bolt when weapon is fired and absorbs some of the recoil. | Recoil | -30% | Requires Calibration Tools. |
| Anti-corrosive coating | 700 RU | A special coating protects the weapon from the elements. | Reliability | +15% | Requires Tools for Fine Work. |
| | Poly-material components | 500 RU | The fashion for plastic components has not only paid off, but it has also become quite a popular upgrade. | Reliability | +10% | Requires Tools for Basic Work. |
| Installation of a round positioning unit | 700 RU | Thanks to firm positioning of the round as it is fired, the bullet continues on a straight path and hits the target. | Accuracy | +20% | Requires Tools for Fine Work. |
| Protective component sputter | 900 RU | Protective sputter makes misfiring due to mechanism malfunction impossible. | Reliability | +30% | Requires Calibration Tools. |
| Low impulse firing mechanism | 350 RU | A low impulse firing mechanism ensures less recoil than older versions. | Recoil | -20% | Requires Tools for Fine Work. |
| Installation of an inertial automatic system | 1,500 RU | An inertial automatic system allows the pump-action mechanism on regular shotguns to be converted into a self-cocking one. | Automatic Fire Mode | Fire Rate | +25% | Requires Calibration Tools. |
| | Magazine capacity increase | 1,200 RU | Magazine capacity increase without increasing weapon part length. | Magazine Size | +2 |
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High durability alloy barrel | 800 RU | High durability materials slow down wear and tear of the weapon's barrel. | Reliability | +10% |
| Longer barrel section | 1,250 RU | Replacement of a regular barrel with a longer one improves flatness. | Flatness | +20% | Requires Tools for Fine Work. |
| Addition of an active counter-weight to the barrel jacket | 1,700 RU | When the weapon is fired, an active counter-weight simultaneously moves to the muzzle section of the barrel, thus compensating for part of the recoil. | Recoil | -30% | Requires Calibration Tools. |
| Application of a protective sputter to the internal part of the barrel | 1,250 RU | Thus sputter prevents the barrel from overheating, removes manufacturing defects and significantly increases the barrel's life cycle. | Reliability | +15% | Requires Tools for Fine Work. |
| Cylindrical drilling of the barrel | 1,700 RU | Cylindrical drilling of barrel helps to improve the weapon's rate of fire without affecting accuracy. | Fire Rate | +25% | Requires Calibration Tools. |
| | Addition of a counter-weight | 800 RU | Addition of a mass component to the weapon to reduce recoil. | Recoil | -10% |
| Ergonomic handle | 1,250 RU | A more modern and comfortable handle simplifies weapon handling. | Handling | +15% | Requires Tools for Fine Work. |
| Amortization handle | 1,250 RU | An amortization handle reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Poly-material components | 800 RU | The fashion for plastic components has not only paid off, but it has also become quite a popular upgrade. | Reliability | +10% | Requires Tools for Basic Work. |
| Low impulse firing mechanism | 1,250 RU | A low impulse firing mechanism ensures less recoil than older versions. | Recoil | -20% | Requires Tools for Fine Work. |
| Installation of an automatic driving rod | 1,700 RU | An automatic driving rod improves a weapon's precision. | Accuracy | +30% | Requires Calibration Tools. |
| Gas motor installation | 2,250 RU | A gas motor is used in self-cocking shotguns for semi-automatic fire. | Automatic Fire Mode | Fire Rate | +15% | Requires Tools for Fine Work. |
| | Use of gas energy | 800 RU | Special gas exit canals around the drum part of the weapon that reduce recoil. | Recoil | -10% | Requires Tools for Basic Work. |
| Addition of diagonal cam slots onto the drum | 1,250 RU | Addition of diagonal cam slot onto the drum, which speed up rotation of the mechanism which uses gas energy. | Fire Rate | +15% | Requires Tools for Fine Work. |
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High durability alloy barrel | 200 RU | High durability materials slow down wear and tear of the weapon's barrel. | Reliability | +10% |
| Longer barrel section | 400 RU | Replacement of a regular barrel with a longer one improves flatness. | Flatness | +20% | Requires Tools for Fine Work. |
| Barrel balancing system | 600 RU | The barrel balancing system includes several mobile pistons that make a weapon more stable when held. | Handling | +25% | Requires Calibration Tools. |
| Longitudinal gas venting canals | 400 RU | The introduction of gas venting canals to the barrel not only prevents it from collecting dirt, but also partially redirects recoil into the barrel itself. | Recoil | -20% | Requires Tools for Fine Work. |
| Rifled barrels | 1,000 RU | The rifled part of the barrel makes it impossible to fire shot, but the accuracy achieved outweighs this drawback. | Accuracy | +30% | Does not use shot | Requires Calibration Tools. |
| | Lighter stock | 200 RU | Lighter version of the standard stock. | Weight | -1.10 kg |
| Ergonomic stock | 400 RU | A more modern and comfortable stock simplifies weapon handling. | Handling | +15% | Requires Tools for Fine Work. |
| Mercury recoil absorber | 400 RU | A mercury recoil absorber is located in the weapon's stock, partially consuming some of the recoil when the weapon is fired. | Recoil | -20% | Requires Tools for Fine Work. |
| | Poly-material components | 200 RU | The fashion for plastic components has not only paid off, but it has also become quite a popular upgrade. | Reliability | +10% | Requires Tools for Basic Work. |
| Low impulse firing mechanism | 400 RU | A low impulse firing mechanism ensures less recoil than older versions. | Recoil | -20% | Requires Tools for Fine Work. |
| Protective component sputter | 600 RU | Protective sputter makes misfiring due to mechanism malfunction impossible. | Reliability | +25% | Requires Calibration Tools. |
| Barrel closing system | 600 RU | When a shot is fired, a component opens a path into the barrel and returns tothe closed position by means of a lengthwise sliding movement of the foregrip. | Flatness | +30% | Requires Calibration Tools. |
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Treatment of the barrel | 100 RU | Treatment of the internal surfact of the barrel protects it from mechanical damage. | Reliability | +10% |
| Synthetic barrel thickener | 250 RU | Synthetic thickening of the barrel cavity causes a considerable improvement in groupings. | Accuracy | +20% | Requires Tools for Fine Work. |
| | Inclined handle | 100 RU | The cavity inside the handle allows the weapon's weight to be reduced. | Weight | -0.90 kg |
| Ergonomic handle | 250 RU | A more modern and comfortable handle simplifies weapon handling. | Handling | +15% | Requires Tools for Fine Work. |
| Amortization handle | 250 RU | An amortization handle reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Component adjustment | 100 RU | Adjustment of components allows the weapon to last longer without jamming. | Reliability | +10% | Requires Tools for Basic Work. |
| Low impulse firing mechanism | 250 RU | A low impulse firing mechanism ensures less recoil than older versions. | Recoil | -20% | Requires Tools for Fine Work. |
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High durability alloy barrel | 650 RU | High durability materials slow down wear and tear of the weapon's barrel. | Reliability | +10% |
| Longer barrel section | 900 RU | Replacement of a regular barrel with a longer one improves flatness. | Flatness | +20% | Requires Tools for Fine Work. |
| Dynamic barrel thickener | 1,150 RU | Thickening with poly-materials allows barrel pressure to be increased, improving bullet speed. | Accuracy | +30% | Requires Calibration Tools. |
| Application of a protective sputter to the internal part of the barrel | 900 RU | Thus sputter prevents the barrel from overheating, removes manufacturing defects and significantly increases the barrel's life cycle. | Reliability | +15% | Requires Tools for Fine Work. |
| Cylindrical drilling of the barrel | 1,150 RU | Cylindrical drilling of barrel helps to improve the weapon's rate of fire without affecting accuracy. | Fire Rate | +30% | Requires Calibration Tools. |
| | Impact-resistant polymer stock | 650 RU | A lighter poly-material allows for the weapon's weight to be reduced. | Weight | -1.40 kg |
| Ergonomic handle | 900 RU | A more modern and comfortable handle simplifies weapon handling. | Handling | +15% | Requires Tools for Fine Work. |
| Amortization handle | 900 RU | An amortization handle reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Poly-material components | 650 RU | The fashion for plastic components has not only paid off, but it has also become quite a popular upgrade. | Reliability | +10% | Requires Tools for Basic Work. |
| Installation of a round positioning unit | 900 RU | Thanks to firm positioning of the round as it is fired, the bullet continues on a straight path and hits the target. | Accuracy | +20% | Requires Tools for Fine Work. |
| Protective component sputter | 1,150 RU | Protective sputter makes misfiring due to mechanism malfunction impossible. | Reliability | +10% | Requires Calibration Tools. |
| Semifree bolt with a roller system | 900 RU | Often used in weaponry, a roller locking system reduces recoil and improves groupings. | Fire Rate | +25% | Requires Tools for Fine Work. |
| Unified blowback module | 1,150 RU | A unified module is one of the best technological solutions for reducing recoil. | Recoil | -20% | Requires Calibration Tools. |
| | Increased magazine capacity | 1,500 RU | Magazine capacity increase without increasing weapon part length. | Magazine Size | +2 |
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Additional return spring | 500 RU | Installation of an additional spring with a reverse coil to reduce recoil without sacrificing flatness. | Recoil | -10% |
| Addition of a balancing element | 800 RU | A synthetic element installed onto rods ensures that they move strictly as intended, increasing accuracy. | Accuracy | +20% | Requires Tools for Fine Work. |
| Installation of a distribution link | 1,100 RU | A link that is opened by gases and closed by the return mechanism itself, which allows part of the gas energy to be used to operate the return mechanism. | Fire Rate | +25% | Requires Calibration Tools. |
| Titanium return mechanism rods | 800 RU | Titanium rods can endure a much higher rate of fire than regular rods. | Fire Rate | +15% | Requires Tools for Fine Work. |
| | Rapid automatic release | 500 RU | Despite the name, it is the bolt that is replaced, as it has to endure the consequences of an improved rate of fire. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Addition of a longitudinal grooves | 800 RU | The purpose of titled grooves on the receiver is to reduce friction and catch small particles, preventing contamination of the bolt section. | Reliability | +15% | Requires Tools for Fine Work. |
| Change to a roller system with a semifree bolt | 1,100 RU | Often used in modern weaponry, a roller locking system reduces recoil and improves groupings. | Accuracy | +30% | Requires Calibration Tools. |
| Creeping bolt installation | 1,100 RU | The weapon's bolt slides along the barrel, preventing upward movement of the muzzle section. | Recoil | -30% | Requires Calibration Tools. |
| | Bolt hammer compensator | 500 RU | The purpose of the bolt hammer compensator is to absorb some of the recoil, improving groupings when firing in bursts. | Recoil | -10% | Requires Tools for Basic Work. |
| Springless release | 800 RU | Removal of the combat spring allows the first shot to be made half a second earlier. It may not be much, but it can save your life. | Handling | +15% | Requires Tools for Fine Work. |
| Boltless fixing of the firing mechanism | 1,100 RU | Boltless fixing allows for automatic load to be increased, considerably improving the weapon's rate of fire. | Fire Rate | +25% | Requires Calibration Tools. |
| Composite firing mechanism components | 800 RU | A special selection of components made from various materials specific to that weapon. It may not be cheap, but it increases the life cycle of your firearm. | Reliability | +15% | Requires Tools for Fine Work. |
| | High durability alloy receiver | 500 RU | A high durability receiver helps assault rifles endure combat conditions on a daily basis. | Reliability | +10% |
| Additional cooling jacket | 800 RU | Installation of jackets helps to address increases in the weapon's rate of fire, which produce additional heat that must be controlled. | Fire Rate | +15% | Requires Tools for Fine Work. |
| Inclined handle | 1,100 RU | A light mobile component is installed in the inclined handle to stabilize the weapon by creating a counter-effect to recoil when the weapon is fired. | Handling | +25% | Requires Calibration Tools. |
| Smoothing receiver groove and indent sputter | 1,100 RU | This sputter prevents the barrel from overheating, removes manufacturing defects and significantly increases the barrel's life cycle. | Flatness | +30% | Requires Calibration Tools. |
| | Increased magazine capacity | 1,000 RU | Replacing a standard magazine with a bigger one. | Magazine Size | +10 |
| Change of caliber to 9x18 | 2,500 RU | A complex, integrated alteration of the weapon's mechanical and automated parts, which allow its caliber to be changed at the cost of reliability. | Caliber | 9x18 | Requires Tools for Fine Work. |
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Addition of a mobile counter-weight | 700 RU | A counter-weight is installed as an additional component into the receiver to reduce recoil by means of counter force. | Recoil | -10% | Requires Tools for Basic Work. |
| Automatic two-position gas regulator | 1,050 RU | Installation of a special mechanism to protect the weapon from dirt. | Reliability | +15% | Requires Tools for Fine Work. |
| Automatic round feeding | 1,300 RU | Installation of a mechanism with mobile components that increase round feeding speed when the weapon is fired. | Fire Rate | +25% | Requires Calibration Tools. |
| Built-in recoil amortization system | 1,300 RU | An integrated improvement that is normally used for sniper rifles in view of the considerable increase in the weapon's weight. | Recoil | -30% | Requires Calibration Tools. |
| | Reinforced return spring | 700 RU | The reinforced spring is used to increase bullet speed. | Flatness | +10% | Requires Tools for Basic Work. |
| Addition of a balancing element | 1,050 RU | A synthetic element installed onto rods ensures that they move strictly as intended, increasing accuracy. | Accuracy | +20% | Requires Tools for Fine Work. |
| Return mechanism sleeve thickener | 1,300 RU | Thickening of the sleeve allows barrel pressure to be increased, improving bullet speed. | Flatness | +30% | Requires Calibration Tools. |
| Titanium return mechanism rods | 1,050 RU | Titanium rods can endure a much higher rate of fire than regular rods. | Fire Rate | +15% | Requires Tools for Fine Work. |
| | Solid bolt installation | 700 RU | This fairly expensive modification is actually common for new generation weapons. | Reliability | +10% | Requires Tools for Basic Work. |
| Directed gas energy | 1,050 RU | Reducing the gas chamber diameter by means of synthetic thickeners considerable increases bullet speed. | Flatness | +20% | Requires Tools for Fine Work. |
| Change to a roller system with a semifree bolt | 1,300 RU | Often used in modern weaponry, a roller locking system reduces recoil and improves groupings. | Accuracy | +30% | Requires Calibration Tools. |
| Installation of an additional gas piston | 1,050 RU | A second piston moves the counter-weight, compensating for the bolt mechanism movement impulse. | Recoil | -20% | Requires Tools for Fine Work. |
| | Impact-resistant polymer stock | 700 RU | The advantage of this European standard modification is reduced weight without a fall in reliability. | Weight | -1.00 kg | Requires Tools for Basic Work. |
| Ergonomic receiver shape | 1,050 RU | A more convenient handle shape, which allows for better handling of the weapon when firing on the move. | Handling | +15% | Requires Tools for Fine Work. |
| Inclined handle | 1,300 RU | A light mobile component is installed in the inclined handle to stabilize the weapon by creating a counter-effect to recoil when the weapon is fired. | Handling | +25% | Requires Calibration Tools. |
| Smoothing receiver groove and indent sputter | 1,300 RU | This sputter prevents the barrel from overheating, removes manufacturing defects and significantly increases the barrel's life cycle. | Flatness | +30% | Requires Calibration Tools. |
| | Underbarrel grenade launcher | 2,700 RU | Installation of a mount for attachment of an underbarrel grenade launcher. | Underbarrel Mount | |
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Addition of a mobile counter-weight | 550 RU | A counter-weight is installed as an additional component into the receiver to reduce recoil by means of counter force. | Recoil | -10% | Requires Tools for Basic Work. |
| Automatic two-position gas regulator | 850 RU | Installation of a special mechanism to protect the weapon from dirt. | Reliability | +15% | Requires Tools for Fine Work. |
| Balanced impact-free system | 1,150 RU | Upgrade of the weapon's automatic components that requires a number of parts to be replaced. Improves accuracy. | Accuracy | +30% | Requires Calibration Tools. |
| Addition of a blowback speed reduction device | 1,150 RU | A special component installed into the bolt mechanism to soften bolt movement and reduce recoil. | Recoil | -30% | Requires Calibration Tools. |
| | Amortization of the return mechanism | 550 RU | Installation of thickeners onto mobile parts of the mechanism ensure that the barrel deviates from the target less during firing. | Handling | +10% | Requires Tools for Basic Work. |
| Addition of a balancing element | 850 RU | A synthetic element installed onto rods ensures that they move strictly as intended, increasing accuracy. | Accuracy | +20% | Requires Tools for Fine Work. |
| Return mechanism sleeve thickener | 1,150 RU | Thickening of the sleeve allows barrel pressure to be increased, improving bullet speed. | Flatness | +30% | Requires Calibration Tools. |
| Titanium return mechanism rods | 850 RU | Titanium rods can endure a much higher rate of fire than regular rods. | Fire Rate | +15% | Requires Tools for Fine Work. |
| | Solid bolt installation | 550 RU | This fairly expensive modification is actually common for new generation weapons. | Reliability | +10% | Requires Tools for Basic Work. |
| Directed gas energy | 850 RU | Reducing the gas chamber diameter by means of synthetic thickeners considerable increases bullet speed. | Flatness | +20% | Requires Tools for Fine Work. |
| Gas energy collection system | 1,150 RU | This system collects some of the gases using the bolt section to improve its movement. | Fire Rate | +25% | Requires Calibration Tools. |
| Installation of an additional gas piston | 850 RU | A second piston moves the counter-weight, compensating for the bolt mechanism movement impulse. | Recoil | -20% | Requires Tools for Fine Work. |
| | Impact-resistant polymer stock | 550 RU | The advantage of this European standard modification is reduced weight without a fall in reliability. | Weight | -1.30 kg | Requires Tools for Basic Work. |
| Ergonomic receiver shape | 850 RU | A more convenient handle shape, which allows for better handling of the weapon when firing on the move. | Handling | +15% | Requires Tools for Fine Work. |
| Inclined handle | 1,150 RU | A light mobile component is installed in the inclined handle to stabilize the weapon by creating a counter-effect to recoil when the weapon is fired. | Handling | +25% | Requires Calibration Tools. |
| | Optical mount | 1,200 RU | Installation of a mount for attachment of an optical scope. | Optical Scope Mount |
| Change of caliber to 5x56 | 2,500 RU | A complex, integrated alteration of the weapon's mechanical and automated parts, which allow its caliber to be changed at the cost of reliability. | Caliber | 5x56 | Requires Tools for Fine Work. |
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Rapid automatic release | 400 RU | Despite the name, it is the bolt that is replaced, as it has to endure the consequences of an improved rate of fire. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Addition of a longitudinal grooves | 800 RU | The purpose of titled grooves on the receiver is to reduce friction and catch small particles, preventing contamination of the bolt section. | Reliability | +15% | Requires Tools for Fine Work. |
| Creeping bolt installation | 900 RU | The weapon's bolt slides along the barrel, preventing upward movement of the muzzle section. | Recoil | -30% | Requires Calibration Tools. |
| Installation of a gas vent with a moving block | 650 RU | Gas vent comes with a block that moves at the same speed, taking on part of the recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| | Addition of a mobile counter-weight | 400 RU | A counter-weight is installed as an additional component into the receiver to reduce recoil by means of counter force. | Recoil | -10% | Requires Tools for Basic Work. |
| Automatic two-position gas regulator | 650 RU | Installation of a special mechanism to protect the weapon from dirt. | Reliability | +15% | Requires Tools for Fine Work. |
| Addition of a blowback speed reduction device | 900 RU | A special component installed into the bolt mechanism to soften bolt movement and reduce recoil. | Recoil | -30% | Requires Calibration Tools. |
| Installation of a "smart compensation" component | 900 RU | A link fixes the position of the barrel and if the barrel moves, additional compensation holes are opened. | Handling | +25% | Requires Calibration Tools. |
| | Bolt hammer compensator | 400 RU | The purpose of the bolt hammer compensator is to absorb some of the recoil, improving groupings when firing in bursts. | Recoil | -10% | Requires Tools for Basic Work. |
| Forcing trigger delay service | 650 RU | Allows the rate of fire to be increased at the cost of accuracy and reliability. | Fire Rate | +15% | Requires Tools for Fine Work. |
| Installation of an impactless firing mechanism system | 900 RU | The impactless system pierces the round instead of striking it by means of a special hammer, which makes the firing process considerably softer. | Handling | +25% | Requires Calibration Tools. |
| Composite firing mechanism components | 650 RU | A special selection of components made from various materials specific to that weapon. It may not be cheap, but it increases the life cycle of your firearm. | Reliability | +15% | Requires Tools for Fine Work. |
| | Additional return spring | 400 RU | Installation of an additional spring with a reverse coil to reduce recoil without sacrificing flatness. | Recoil | -10% |
| Titanium return mechanism rods | 650 RU | Titanium rods can endure a much higher rate of fire than regular rods. | Fire Rate | +15% | Requires Tools for Fine Work. |
| Installation of a distribution link | 1,100 RU | A link that is opened by gases and closed by the return mechanism itself, which allows part of the gas energy to be used to operate the return mechanism. | Fire Rate | +25% | Requires Calibration Tools. |
| | Increased magazine capacity | 800 RU | Replacing a standard magazine with a bigger one. | Magazine Size | +10 |
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Impact-resistant polymer components for automatic elements | 1,500 RU | The fashion for polymer components has not only paid off, but it has also become quite a popular upgrade. | Reliability | +10% | Requires Tools for Basic Work. |
| Automatic two-position gas regulator | 2,000 RU | Installation of a special mechanism to protect the weapon from dirt. | Reliability | +15% | Requires Tools for Fine Work. |
| Installation of a "smart compensation" component | 2,500 RU | A link fixes the position of the barrel and if the barrel moves, additional compensation holes are opened. | Handling | +25% | Requires Calibration Tools. |
| Installation of a barrel closing device | 2,000 RU | A special component seals the barrel in an airtight manner to increase pressure when a shot is fired. | Flatness | +20% | Requires Tools for Fine Work. |
| Addition of a stopping device | 2,500 RU | A synthetic component immediately in front of the bolt movement area, which compresses it significantly to improve firing accuracy. | Accuracy | +30% | Requires Calibration Tools. |
| | Bolt section thickening with synthetic inserts | 1,500 RU | Thickening of the bolt section prevents energy dissipation, which improves flatness. | Flatness | +10% | Requires Tools for Basic Work. |
| Directed gas energy | 2,000 RU | Reducing the gas chamber diameter by means of synthetic thickeners considerable increases bullet speed. | Flatness | +20% | Requires Tools for Fine Work. |
| Change to a roller system with a semifree bolt | 2,500 RU | Often used in modern weaponry, a roller locking system reduces recoil and improves groupings. | Accuracy | +30% | Requires Calibration Tools. |
| Forced cooling | 2,000 RU | On its way back to its starting position, the bolt redirects the air flow via the barrel chamber, cooling it. | Fire Rate | +15% | Requires Tools for Fine Work. |
| Creeping bolt installation | 2,500 RU | The weapon's bolt slides along the barrel, preventing upward movement of the muzzle section. | Recoil | -30% | Requires Calibration Tools. |
| | Additional return spring | 1,500 RU | Installation of an additional spring with a reverse coil to reduce recoil without sacrificing flatness. | Recoil | -10% |
| Protective return mechanism component sputter | 2,000 RU | Protective sputter increases reliability and, more importantly, ensures airtightness, which prevents energy dissipation. | Reliability | +10% | Requires Tools for Fine Work. |
| Conversion to a two rod system | 2,500 RU | Replacement of the return mechanism with a more powerful version comprising two guiding rods and return springs. Increases the weapon's rate of fire. | Fire Rate | +30% | Requires Calibration Tools. |
| Addition of a balancing element | 2,000 RU | A synthetic element installed onto rods ensures that they move strictly as intended, increasing accuracy. | Accuracy | +20% | Requires Tools for Fine Work. |
| Return mechanism sleeve thickener | 2,500 RU | Thickening of the sleeve allows barrel pressure to be increased, improving bullet speed. | Flatness | +30% | Requires Calibration Tools. |
| | 4.0x optical scope | 1,800 RU | Mounting of an optical scope for medium and long range combat. | 4x Optical Scope |
| Improvement of sight contrast | 3,000 RU | A modification made to assault weapons with reflex sights by means of a simple improvement in sight contrast in the yellow range. Important for combat in twilight conditions and dim buildings. | High Contrast Sight | Requires Tools for Fine Work. |
| Automatic optical target acquisition | 12,500 RU | A heat visor allows the wearer to detect and identify matching heat sources. | Automatic Target Acquisition System | Requires Calibration Tools. |
| Adjustable range-finder sight | 5,500 RU | This modification allows the sight to be easily adjusted to the firing distance. | Adjustable Sight | Requires Calibration Tools. |
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Impact-resistant polymer components for automatic elements | 900 RU | The fashion for polymer components has not only paid off, but it has also become quite a popular upgrade. | Reliability | +10% | Requires Tools for Basic Work. |
| Inertia delay mechanism | 1,400 RU | A component installed on the rear side of the receiver that reduces bolt speed. Installed to improve effectiveness of aimed fire. | Accuracy | +20% | Requires Tools for Fine Work. |
| Installation of a "smart compensation" component | 1,900 RU | A link fixes the position of the barrel and if the barrel moves, additional compensation holes are opened. | Handling | +25% | Requires Calibration Tools. |
| Addition of a stopping device | 1,900 RU | A synthetic component immediately in front of the bolt movement area, which compresses it significantly to improve firing accuracy. | Accuracy | +30% | Requires Calibration Tools. |
| | Pneumatic stock | 900 RU | A pneumatic stock is used to reduce recoil during burst fire. | Recoil | -10% | Requires Tools for Basic Work. |
| Ergonomic stock | 1,400 RU | A more modern stock, which takes account of the specific nature of human physiology. | Handling | +15% | Requires Tools for Fine Work. |
| Lengthening the bolt frame shock buffer | 1,900 RU | Partial lengthening of the bolt frame into the stock allows flatness to be increased at the cost of more recoil. | Flatness | +20% | Requires Calibration Tools. |
| Installation of an amortization should rest | 1,400 RU | A mobile shoulder rest considerably reduces recoil impact on the body. | Recoil | -15% | Requires Tools for Fine Work. |
| | Installation of a "floating" barrel | 900 RU | The lack of big gas chambers and barrel mounting on the foregrip has a positive effect on accuracy. | Accuracy | +10% | Requires Tools for Basic Work. |
| Optimized compensation muzzle brake | 1,400 RU | Replacement of dated component with a more modern one reduces recoil. | Recoil | -10% | Requires Tools for Fine Work. |
| Installation of a barrel with a polygon rifled section | 1,900 RU | Polygon rifling is usually performed to improve accuracy. | Flatness | +20% | Requires Calibration Tools. |
| Rifled sniper rifle canals | 1,900 RU | A peculiar barrel replacement for weapons with good flatness characteristics that improves their accuracy. | Accuracy | +30% | Requires Calibration Tools. |
| | 1.6x reflex sight | 1,200 RU | Mounting of an assault scope for close range combat. | 1.6x Reflex Sight |
| Improvement of sight contrast | 2,000 RU | A modification made to assault weapons with reflex sights by means of a simple improvement in sight contrast in the yellow range. Important for combat in twilight conditions and dim buildings. | High Contrast Sight | Requires Tools for Fine Work. |
| Night vision device installation | 4,000 RU | Night vision devices have saved many a sniper since their inception. | Second Generation Night Vision Device | Requires Calibration Tools. |
| Adjustable range-finder sight | 3,500 RU | This modification allows the sight to be easily adjusted to the firing distance. | Adjustable Sight | Requires Calibration Tools. |
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High durability alloy receiver | 600 RU | A high durability receiver helps assault rifles endure combat conditions on a daily basis. | Reliability | +10% | Requires Tools for Basic Work. |
| Ergonomic receiver shape | 900 RU | A more convenient handle shape, which allows for better handling of the weapon when firing on the move. | Handling | +15% | Requires Tools for Fine Work. |
| Modular receiver | 1,200 RU | A modification used exclusively for barrels with solid bullpup receivers, which simplifies maintenance of the weapon. | Reliability | +25% | Requires Calibration Tools. |
| Smoothing receiver groove and indent sputter | 1,200 RU | This sputter prevents the barrel from overheating, removes manufacturing defects and significantly increases the barrel's life cycle. | Flatness | +30% | Requires Calibration Tools. |
| | Soft release | 600 RU | One of the simplest and most popular modifications, which allows for trigger resistance to be reduced. Simple and handly. | Accuracy | +10% |
| Springless release | 900 RU | Removal of the combat spring allows the first shot to be made half a second earlier. It may not be much, but it can save your life. | Handling | +15% | Requires Tools for Fine Work. |
| Protective firing mechanism component sputter | 1,200 RU | Protective sputter makes misfiring due to firing mechanism impossible. | Reliability | +25% | Requires Calibration Tools. |
| Composite firing mechanism components | 900 RU | A special selection of components made from various materials specific to that weapon. It may not be cheap, but it increases the life cycle of your firearm. | Reliability | +15% | Requires Tools for Fine Work. |
| | Longer barrel | 600 RU | Replacement of a regular barrel with a longer one improves accuracy and flatness. | Flatness | +10% | Requires Tools for Basic Work. |
| Optimized compensation muzzle brake | 900 RU | Replacement of dated component with a more modern one reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| Installation of a barrel with a polygon rifled section | 1,200 RU | Polygon rifling is usually performed to improve accuracy. | Flatness | +30% | Requires Calibration Tools. |
| Rifled sniper rifle canals | 1,200 RU | A peculiar barrel replacement for weapons with good flatness characteristics that improves their accuracy. | Accuracy | +30% | Requires Calibration Tools. |
| | 4.0x optical scope | 1,000 RU | Mounting of an optical scope for medium and long range combat. | 4x Optical Scope |
| Improvement of sight contrast | 1,500 RU | A modification made to assault weapons with reflex sights by means of a simple improvement in sight contrast in the yellow range. Important for combat in twilight conditions and dim buildings. | High Contrast Sight | Requires Tools for Fine Work. |
| Adjustable range-finder sight | 3,000 RU | This modification allows the sight to be easily adjusted to the firing distance. | Adjustable Sight | Requires Calibration Tools. |
| | External threading of the barrel | 800 RU | External threading allows a silencer to be installed. | Silencer |
| Change of caliber to 5.45x39 | 2,500 RU | A complex, integrated alteration of the weapon's mechanical and automated parts, which allow its caliber to be changed at the cost of reliability. | Caliber | 5.45x39 | Requires Tools for Fine Work. |
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Impact-resistant polymer components for automatic elements | 1,000 RU | The fashion for polymer components has not only paid off, but it has also become quite a popular upgrade. | Reliability | +10% | Requires Tools for Basic Work. |
| Addition of a blowback speed reduction device | 1,400 RU | A special component installed into the bolt mechanism to soften bolt movement and reduce recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| Automatic round feeding | 1,800 RU | Installation of a mechanism with mobile components that increase round feeding speed when the weapon is fired. | Fire Rate | +30% | Requires Calibration Tools. |
| Installation of a barrel closing device | 1,400 RU | A special component seals the barrel in an airtight manner to increase pressure when a shot is fired. | Flatness | +20% | Requires Tools for Fine Work. |
| Addition of a stopping device | 1,800 RU | A synthetic component immediately in front of the bolt movement area, which compresses it significantly to improve firing accuracy. | Accuracy | +30% | Requires Calibration Tools. |
| | Pneumatic stock | 1,000 RU | A pneumatic stock is used to reduce recoil during burst fire. | Recoil | -10% | Requires Tools for Basic Work. |
| Ergonomic stock | 1,400 RU | A more modern stock, which takes account of the specific nature of human physiology. | Handling | +15% | Requires Tools for Fine Work. |
| Mobile counter-weight | 1,800 RU | Installation of a mobile component into the stock, which creates a counter-effect when the weapon is fired. | Handling | +25% | Requires Calibration Tools. |
| Installation of a bolt assembly gas buffer | 1,800 RU | When the weapon is fired, some of the powder gases are removed from the barrel into the cavity behind the bolt, ensuring that it stops smoothly on the way back. | Recoil | -30% | Requires Calibration Tools. |
| | Reinforced return spring | 1,000 RU | The reinforced spring is used to increase bullet speed. | Flatness | +10% | Requires Tools for Basic Work. |
| Protective return mechanism component sputter | 1,400 RU | Protective sputter increases reliability and, more importantly, ensures airtightness, which prevents energy dissipation. | Reliability | +20% | Requires Tools for Fine Work. |
| Installation of a distribution link | 1,800 RU | A link that is opened by gases and closed by the return mechanism itself, which allows part of the gas energy to be used to operate the return mechanism. | Fire Rate | +25% | Requires Calibration Tools. |
| Addition of a balancing element | 1,400 RU | A synthetic element installed onto rods ensures that they move strictly as intended, increasing accuracy. | Accuracy | +20% | Requires Tools for Fine Work. |
| Return mechanism sleeve thickener | 1,800 RU | Thickening of the sleeve allows barrel pressure to be increased, improving bullet speed. | Flatness | +30% | Requires Calibration Tools. |
| | Rapid automatic release | 1,000 RU | Despite the name, it is the bolt that is replaced, as it has to endure the consequences of an improved rate of fire. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Protective bolt section sputter | 1,400 RU | Protective sputter increases reliability and, more importantly, ensures airtightness, which prevents energy dissipation. | Reliability | +15% | Requires Tools for Fine Work. |
| Change to a roller system with a semifree bolt | 1,800 RU | Often used in modern weaponry, a roller locking system reduces recoil and improves groupings. | Accuracy | +30% | Requires Calibration Tools. |
| Creeping bolt installation | 1,800 RU | The weapon's bolt slides along the barrel, preventing upward movement of the muzzle section. | Recoil | -30% | Requires Calibration Tools. |
| | Increased magazine capacity | 1,500 RU | Replacing a standard magazine with a bigger one. | Magazine Size | +10 |
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Rapid automatic release | 800 RU | Despite the name, it is the bolt that is replaced, as it has to endure the consequences of an improved rate of fire. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Installation of an additional gas piston | 1,200 RU | A second piston moves the counter-weight, compensating for the bolt mechanism movement impulse. | Recoil | -20% | Requires Tools for Fine Work. |
| Creeping bolt installation | 1,600 RU | The weapon's bolt slides along the barrel, preventing upward movement of the muzzle section. | Recoil | -30% | Requires Calibration Tools. |
| Protective bolt section sputter | 1,200 RU | Protective sputter increases reliability and, more importantly, ensures airtightness, which prevents energy dissipation. | Reliability | +25% | Requires Tools for Fine Work. |
| | Addition of a mobile counter-weight | 800 RU | A counter-weight is installed as an additional component into the receiver to reduce recoil by means of counter force. | Recoil | -10% | Requires Tools for Basic Work. |
| Inertia delay mechanism | 1,200 RU | A component installed on the rear side of the receiver that reduces bolt speed. Installed to improve effectiveness of aimed fire. | Accuracy | +20% | Requires Tools for Fine Work. |
| Addition of a blowback speed reduction device | 1,600 RU | A special component installed into the bolt mechanism to soften bolt movement and reduce recoil. | Recoil | -30% | Requires Calibration Tools. |
| Addition of a stopping device | 1,600 RU | A synthetic component immediately in front of the bolt movement area, which compresses it significantly to improve firing accuracy. | Accuracy | +30% | Requires Calibration Tools. |
| | Installation of a barrel with cooling fins | 800 RU | This modification is used to reduce the harm caused by excessive firing rate modifications. | Reliability | +10% |
| Installation of a barrel with a simplified rifled section | 1,200 RU | This barrel is intended to increase the kill zone in close quarter combat and is therefore not suitable for accurate fire. Improves the rate of fire due to the simplification of the rifled part of the barrel. | Fire Rate | +15% | Requires Tools for Fine Work. |
| Sinusoidal rifling of barrel chamber | 1,600 RU | Allows barrel heat to be reduced and increases the rate of fire. | Fire Rate | +25% | Requires Calibration Tools. |
| Additional threaded canals in the barrel | 1,200 RU | Installation of a barrel with additional threaded canals improves bullet speed and weapon accuracy at the cost of a considerable increase in recoil. | Flatness | +20% | Requires Tools for Fine Work. |
| | Impact-resistant polymer stock | 800 RU | The advantage of this European standard modification is reduced weight without a fall in reliability. | Weight | -1.30 kg | Requires Tools for Basic Work. |
| Ergonomic receiver shape | 1,200 RU | A more convenient handle shape, which allows for better handling of the weapon when firing on the move. | Handling | +15% | Requires Tools for Fine Work. |
| Inclined handle | 1,600 RU | A light mobile component is installed in the inclined handle to stabilize the weapon by creating a counter-effect to recoil when the weapon is fired. | Handling | +25% | Requires Calibration Tools. |
| Smoothing receiver groove and indent sputter | 1,600 RU | This sputter prevents the barrel from overheating, removes manufacturing defects and significantly increases the barrel's life cycle. | Flatness | +30% | Requires Calibration Tools. |
| | Increased magazine capacity | 1,500 RU | Replacing a standard magazine with a bigger one. | Magazine Size | +10 |
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Solid bolt installation | 700 RU | This fairly expensive modification is actually common for new generation weapons. | Reliability | +10% | Requires Tools for Basic Work. |
| Directed gas energy | 1,050 RU | Reducing the gas chamber diameter by means of synthetic thickeners considerable increases bullet speed. | Flatness | +20% | Requires Tools for Fine Work. |
| Gas piston installation | 1,300 RU | Installation of a gas pistol stops gases from entering the bolt frame, which considerably reduces weapon dirtiness. | Reliability | +30% | Requires Calibration Tools. |
| Forced cooling | 1,050 RU | On its way back to its starting position, the bolt redirects the air flow via the barrel chamber, cooling it. | Fire Rate | +15% | Requires Tools for Fine Work. |
| | Addition of a mobile counter-weight | 700 RU | A counter-weight is installed as an additional component into the receiver to reduce recoil by means of counter force. | Recoil | -10% | Requires Tools for Basic Work. |
| Automatic two-position gas regulator | 1,050 RU | Installation of a special mechanism to protect the weapon from dirt. | Reliability | +15% | Requires Tools for Fine Work. |
| Addition of a blowback speed reduction device | 1,300 RU | A special component installed into the bolt mechanism to soften bolt movement and reduce recoil. | Recoil | -30% | Requires Calibration Tools. |
| Addition of a stopping device | 1,300 RU | A synthetic component immediately in front of the bolt movement area, which compresses it significantly to improve firing accuracy. | Accuracy | +30% | Requires Calibration Tools. |
| | Amortization of the return mechanism | 700 RU | Installation of thickeners onto mobile parts of the mechanism ensure that the barrel deviates from the target less during firing. | Handling | +10% | Requires Tools for Basic Work. |
| Addition of a balancing element | 1,050 RU | A synthetic element installed onto rods ensures that they move strictly as intended, increasing accuracy. | Accuracy | +20% | Requires Tools for Fine Work. |
| Conversion to a two rod system | 1,300 RU | Replacement of the return mechanism with a more powerful version comprising two guiding rods and return springs. Increases the weapon's rate of fire. | Fire Rate | +25% | Requires Calibration Tools. |
| Titanium return mechanism rods | 1,050 RU | Titanium rods can endure a much higher rate of fire than regular rods. | Fire Rate | +15% | Requires Tools for Fine Work. |
| | Impact-resistant polymer stock | 700 RU | The advantage of this European standard modification is reduced weight without a fall in reliability. | Weight | -0.70 kg | Requires Tools for Basic Work. |
| Ergonomic receiver shape | 1,050 RU | A more convenient handle shape, which allows for better handling of the weapon when firing on the move. | Handling | +15% | Requires Tools for Fine Work. |
| Inclined handle | 1,050 RU | A light mobile component is installed in the inclined handle to stabilize the weapon by creating a counter-effect to recoil when the weapon is fired. | Handling | +25% | Requires Calibration Tools. |
| Smoothing receiver groove and indent sputter | 1,300 RU | This sputter prevents the barrel from overheating, removes manufacturing defects and significantly increases the barrel's life cycle. | Flatness | +30% | Requires Calibration Tools. |
| | Increased magazine capacity | 1,200 RU | Replacing a standard magazine with a bigger one. | Magazine Size | +10 |
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Rapid automatic release | 1,000 RU | Despite the name, it is the bolt that is replaced, as it has to endure the consequences of an improved rate of fire. | Fire Rate | +10% | Requires Tools for Basic Work. |
| Installation of an additional gas piston | 1,600 RU | A second piston moves the counter-weight, compensating for the bolt mechanism movement impulse. | Recoil | -20% | Requires Tools for Fine Work. |
| Short movement gas piston | 2,200 RU | A replacement of the automatic parts is more of an optimization than an improvement of the gas piston. Provides considerable increase in the weapon's rate of fire. | Fire Rate | +25% | Requires Calibration Tools. |
| Protective bolt section sputter | 1,600 RU | Sputter protects weapons from early wear. | Reliability | +15% | Requires Tools for Fine Work. |
| Change to a roller system with a semifree bolt | 2,200 RU | Often used in modern weaponry, a roller locking system reduces recoil and improves groupings. | Accuracy | +30% | Requires Calibration Tools. |
| | Mobile counter-weight | 1,000 RU | Installation of a mobile component into the stock, which creates a counter-effect when the weapon is fired. | Handling | -10% | Requires Tools for Basic Work. |
| Installation of a barrel closing device | 1,600 RU | A special component seals the barrel in an airtight manner to increase pressure when a shot is fired. | Flatness | +20% | Requires Tools for Fine Work. |
| Addition of a blowback speed reduction device | 2,200 RU | A special component installed into the bolt mechanism to soften bolt movement and reduce recoil. | Recoil | -30% | Requires Calibration Tools. |
| Addition of a stopping device | 2,200 RU | A synthetic component immediately in front of the bolt movement area, which compresses it significantly to improve firing accuracy. | Accuracy | +30% | Requires Calibration Tools. |
| | Additional return spring | 1,000 RU | Installation of an additional spring with a reverse coil to reduce recoil without sacrificing flatness. | Recoil | -10% |
| Addition of a balancing element | 1,600 RU | A synthetic element installed onto rods ensures that they move strictly as intended, increasing accuracy. | Accuracy | +20% | Requires Tools for Fine Work. |
| Installation of a distribution link | 2,200 RU | A link that is opened by gases and closed by the return mechanism itself, which allows part of the gas energy to be used to operate the return mechanism. | Fire Rate | +25% | Requires Calibration Tools. |
| Protective return mechanism component sputter | 1,600 RU | Protective sputter increases reliability and, more importantly, ensures airtightness, which prevents energy dissipation. | Reliability | +15% | Requires Tools for Fine Work. |
| Return mechanism sleeve thickener | 2,200 RU | Thickening of the sleeve allows barrel pressure to be increased, improving bullet speed. | Flatness | +30% | Requires Calibration Tools. |
| | Addition of counter-weight to the steel box | 1,000 RU | A simple addition of weight to the front of the receiver to reduce recoil. | Recoil | -10% |
| Ergonomic receiver shape | 1,600 RU | A more convenient handle shape, which allows for better handling of the weapon when firing on the move. | Handling | +15 | Requires Tools for Fine Work. |
| Modular receiver | 2,200 RU | A modification used exclusively for barrels with solid bullpup receivers, which simplifies maintenance of the weapon. | Reliability | +25% | Requires Calibration Tools. |
| Smoothing receiver groove and indent sputter | 2,200 RU | This sputter prevents the barrel from overheating, removes manufacturing defects and significantly increases the barrel's life cycle. | Flatness | +30% | Requires Calibration Tools. |
| | Increased magazine capacity | 1,800 RU | Replacing a standard magazine with a bigger one. | Magazine Size | +10 |
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Heat absorbing components | 2,000 RU | In absorbing some of the heat, the components reduce weapon temperature changes during firing. | Reliability | +10% | Requires Tools for Basic Work. |
| Installation of a special moving parts buffer | 2,500 RU | A moving parts buffer evenly distributes recoil throughout the weapon when it is fired, making it less pronounced. | Recoil | -20% | Requires Tools for Fine Work. |
| Even forced cooling system | 3,000 RU | Symmetrical force cooling of a part of the barrel happens due to the work of an ejector and prevents weapon overheating. | Fire Rate | +25% | Requires Calibration Tools. |
| Long gas piston movement | 2,500 RU | A longer movement of the gas piston slightly increases weapon length, with a serious improvement in flatness. | Flatness | +20% | Requires Tools for Fine Work. |
| | Addition of an active counter-weight | 2,000 RU | An active counter-weight moves from the bolt frame, partially compensating for recoil. | Recoil | -10% | Requires Tools for Basic Work. |
| Installation of a blowback roller compensation system | 2,500 RU | Installation of additional roller parts reduces recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| Installation of a self-regulating counter-weight | 3,000 RU | When the weapon is fired, the bolt frame counter-weight moves in the opposite direction to the bolt, which allows for more comfortable firing of the machine gun. | Handling | +25% | Requires Calibration Tools. |
| Open bolt firing systems | 3,000 RU | Replacement of the weapon's bolt mechanism with a more suitable design, which improves the rate of fire. | Fire Rate | +25% | Requires Calibration Tools. |
| | Addition of thermal regulation jackets | 2,000 RU | An important modification that protects the weapon from air temperature effects during firing. | Reliability | +10% | Requires Tools for Basic Work. |
| External barrel finning | 2,500 RU | A technological improvement, finning requires extreme precision to prevent the formation of overheating points on the barrel. | Reliability | +15% | Requires Tools for Fine Work. |
| Changing barrel geometry | 3,000 RU | Replacement of the barrel with a more modern version allows for a considerable increase in accuracy. | Accuracy | +30% | Requires Calibration Tools. |
| High-durability, thermal resistant alloys | 2,500 RU | A change of material reduces barrel damage from uneven heating during firing, which allows the weapon's rate of fire to be increased. | Fire Rate | +15% | Requires Tools for Fine Work. |
| | Increased rest size | 2,000 RU | A larger rest allows for accurate fire. | Accuracy | +10% | Requires Tools for Basic Work. |
| Built-in spring-based recoil buffer | 2,500 RU | An amortization spring recoil buffer partially removes the discomfort experienced when firing a hand-held machine gun. | Handling | +15% | Requires Tools for Fine Work. |
| Additional bolt assembly gas buffer | 3,000 RU | A bolt assembly buffer position in the stock takes on and absorbs most of the recoil. | Recoil | -30% | Requires Calibration Tools. |
| | Increased box magazine capacity | 5,000 RU | A lighter yet higher-capacity polycarbonate box magazine, which offsets some of the weight increase. | Magazine Size | +100 |
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Installation of a trigger release regulation mechanism | 1,400 RU | Modernization that allows the trigger mechanism to be smoother, which is important for snipers. | Handling | +10% | Requires Tools for Basic Work. |
| Semifree bolt with a roller system | 1,800 RU | Often used in weaponry, a roller locking system reduces recoil and improves groupings. | Fire Rate | +20% | Requires Tools for Fine Work. |
| Tuning of automatic parts using sputter | 2,200 RU | Sputter prevents energy from dispersing, which increases bullet impulse. | Flatness | +30% | Requires Calibration Tools. |
| Firing amortization system | 1,800 RU | A special mechanism takes on some of the impact during firing, which makes shooting the weapon more comfortable. | Handling | +20% | Requires Tools for Fine Work. |
| | Installation of a perforated steel jacket | 1,400 RU | Intended for weapons that are used often, the jacket protects them from early wear. | Reliability | +15% | Requires Tools for Basic Work. |
| Effective compensation muzzle | 1,800 RU | A more technological and more recoil dampening component than used in regular automatic weapons. | Recoil | -20% | Requires Tools for Fine Work. |
| Installation of a heavy barrel section with polygon rifling | 1,800 RU | A more modern and suitable barrel for sniper fire at very long range. | Accuracy | +20% | Requires Tools for Fine Work. |
| | Amortization stock component | 1,400 RU | A rubberized recoil-softening part is often used on factory-made stock for large caliber sniper rifles. | Recoil | -10% | Requires Tools for Basic Work. |
| Adjustable stock with a cheek pad | 1,800 RU | An adjustable stock with a cheek pad is useful for firing from both convenient and inconvenient positions. | Handling | +15% | Requires Tools for Fine Work. |
| Hydraulic stock recoil buffer | 2,200 RU | A component for large caliber weapons with powerful recoil installed in the stock. | Recoil | -30% | Requires Calibration Tools. |
| | 6.0x optical scope | 2,100 RU | Mounting of an optical scope for long range combat. | 6x Optical Scope |
| Improvement of sight contrast | 3,200 RU | A modification made to assault weapons with reflex sights by means of a simple improvement in sight contrast in the yellow range. Important for combat in twilight conditions and dim buildings. | High Contrast Sight | Requires Tools for Fine Work. |
| Night vision device installation | 5,000 RU | Night vision devices have saved many a sniper since their inception. | Second Generation Night Vision Device | Requires Calibration Tools. |
| Automatic optical target acquisition | 14,000 RU | A heat visor allows the wearer to detect and identify matching heat sources. | Automatic Target Acquisition System | Requires Calibration Tools. |
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Installation of an advance notice trigger | 1,500 RU | This component allows the shooter to get a feel for the moment at which the shot is fired, improving firing accuracy. | Accuracy | +10% | Requires Tools for Basic Work. |
| Installation of an automatic three-position gas regulation device | 2,100 RU | As sniper rifles are more demanding in terms of maintenance than regular weapons, they can be upgraded with three-positional gas regulation devices. | Reliability | +15% | Requires Tools for Fine Work. |
| Tuning of automatic parts using sputter | 2,700 RU | Sputter prevents energy from dispersing, which increases bullet impulse. | Flatness | +30% | Requires Calibration Tools. |
| Installation of a stopping device | 2,700 RU | A stopping device affects the blowback mechanism, improving firing precision. | Accuracy | +30% | Requires Calibration Tools. |
| | Installation of a perforated steel jacket | 1,500 RU | Intended for weapons that are used often, the jacket protects them from early wear. | Reliability | +10% | Requires Tools for Basic Work. |
| Effective compensation muzzle | 2,100 RU | A more technological and more recoil dampening component than used in regular automatic weapons. | Recoil | -20% | Requires Tools for Fine Work. |
| Installation of an integrated silencer | 2,700 RU | Integrated silencer and flash suppressor, essential for stealth fire. | Silencer | Requires Calibration Tools. |
| Longitudinal fullers of the barrel section | 2,100 RU | Longitudinal fullers of the barrel section prevent the barrel from overheating and dirt contamination. | Reliability | +15% | Requires Tools for Fine Work. |
| Sinusoidal rifling of barrel chamber | 2,700 RU | Sinusoidal rifling of the barrel chamber is usually performed on assault weapons to increase their rate of fire. | Fire Rate | +25% | Requires Calibration Tools. |
| | Amortization stock component | 1,500 RU | A rubberized recoil-softening part is often used on factory-made stock for large caliber sniper rifles. | Recoil | -10% | Requires Tools for Basic Work. |
| Adjustable stock with a cheek pad | 2,100 RU | An adjustable stock with a cheek pad is useful for firing from both convenient and inconvenient positions. | Handling | +20% | Requires Tools for Fine Work. |
| | 5.0x optical scope | 2,000 RU | Mounting of an optical scope for long range combat. | 5x Optical Scope |
| Improvement of sight contrast | 3,000 RU | A modification made to assault weapons with reflex sights by means of a simple improvement in sight contrast in the yellow range. Important for combat in twilight conditions and dim buildings. | High Contrast Sight | Requires Tools for Fine Work. |
| Night vision device installation | 4,500 RU | Night vision devices have saved many a sniper since their inception. | Second Generation Night Vision Device | Requires Calibration Tools. |
| Adjustable range-finder sight | 7,000 RU | This modification allows the sight to be easily adjusted to the firing distance. | Adjustable Sight | Requires Calibration Tools. |
| | Increased magazine capacity | 1,500 RU | Replacing a standard magazine with a bigger one. | Magazine Size | +5 |
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Impact-resistant polymer components for automatic elements | 1,000 RU | The fashion for polymer components has not only paid off, but it has also become quite a popular upgrade. | Reliability | +10% | Requires Tools for Basic Work. |
| Addition of a blowback speed reduction device | 1,500 RU | A special component installed into the bolt mechanism to soften bolt movement and reduce recoil. | Recoil | -20% | Requires Tools for Fine Work. |
| Installation of a "smart compensation" component | 2,000 RU | A link fixes the position of the barrel and if the barrel moves, additional compensation holes are opened. | Handling | +25% | Requires Calibration Tools. |
| Rod movement synchronization | 1,500 RU | Synchronization is achieved by means of a cog, which allows flatness to be increased. | Flatness | +20% | Requires Tools for Fine Work. |
| Addition of a stopping device | 2,000 RU | A synthetic component immediately in front of the bolt movement area, which compresses it significantly to improve firing accuracy. | Accuracy | +30% | Requires Calibration Tools. |
| | Reinforced return spring | 1,000 RU | The reinforced spring is used to increase bullet speed. | Flatness | +10% | Requires Tools for Basic Work. |
| Protective return mechanism component sputter | 1,500 RU | Protective sputter increases reliability and, more importantly, ensures airtightness, which prevents energy dissipation. | Reliability | +15% | Requires Tools for Fine Work. |
| Return mechanism sleeve thickener | 2,000 RU | Thickening of the sleeve allows barrel pressure to be increased, improving bullet speed. | Flatness | +30% | Requires Calibration Tools. |
| Addition of a balancing element | 1,500 RU | A synthetic element installed onto rods ensures that they move strictly as intended, increasing accuracy. | Accuracy | +20% | Requires Tools for Fine Work. |
| | Pneumatic stock | 1,000 RU | A pneumatic stock is used to reduce recoil during burst fire. | Recoil | -10% | Requires Tools for Basic Work. |
| Ergonomic stock | 1,500 RU | A more modern stock, which takes account of the specific nature of human physiology. | Handling | +15% | Requires Tools for Fine Work. |
| Mobile counter-weight | 2,000 RU | Installation of a mobile component into the stock, which creates a counter-effect when the weapon is fired. | Handling | +25% | Requires Calibration Tools. |
| Installation of a bolt assembly gas buffer | 2,000 RU | When the weapon is fired, some of the powder gases are removed from the barrel into the cavity behind the bolt, ensuring that it stops smoothly on the way back. | Recoil | -30% | Requires Calibration Tools. |
| | 5.0x optical scope | 1,500 RU | Mounting of an optical scope for long range combat. | 5x Optical Scope |
| Improvement of sight contrast | 3,000 RU | A modification made to assault weapons with reflex sights by means of a simple improvement in sight contrast in the yellow range. Important for combat in twilight conditions and dim buildings. | High Contrast Sight | Requires Tools for Fine Work. |
| Night vision device installation | 4,500 RU | Night vision devices have saved many a sniper since their inception. | Second Generation Night Vision Device | Requires Calibration Tools. |
| Automatic optical target acquisition | 10,000 RU | A heat visor allows the wearer to detect and identify matching heat sources. | Automatic Target Acquisition System | Requires Calibration Tools. |
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