Finally, a drop-in solution for taming the notoriously-overgassed AK platform. The patent-pending KNS AK Adjustable Gas Piston is a replacement for the AKs piston head that attaches to the bolt carrier in about 10 minutes with no major gunsmithing or permanent modification required. The user is granted an extremely wide range of gas adjustment for suppressed and unsuppressed use, as well as a variety of different kinds of ammunition.A good rule of thumb to determine if our piston will be useful, is if your gun throws the brass over 15 feet. This can signify excess gas pushing the carrier back at a higher velocity and pressure, than is needed for effective operation. This causes more recoil, more wear and tear, and less controllability. Many users are surprised to feel the difference in how their gun shoots with our Adjustable Gas Piston System installed.There is no need to remove or replace your gas block for adjustability. Just change the piston, and go shoot.Specifications for KNS Precision Adjustable Gas Piston System:Manufacturer:KNS PrecisionFinish:BlackFabric/Material:Stainless SteelGun Model:AK-74, AK-47Condition:NewCountry of Origin:USAFeatures of KNS Precision Adjustable Gas Piston System:Key Benefits:-Tool-Free Adjustment-Reduces Recoil-Tune almost any AK for suppressed use-Decrease cyclic rate for full-auto fire-made in specialized factories 922r Compliance Part-Piston head assembly made from corrosion-resistant stainless steel-All surface parts nitrided for durablelow-friction& easily-cleaned operation-Patent-PendingPackage Contents:KNS Precision Adjustable Gas Piston SystemKNS Precision AGP-A-1: Adjustable Gas Piston System- 5.45 Krinkov, BlackKNS Precision AGP-A-16S: Adjustable Gas Piston System- VEPR, Black, SmallKNS Precision AGP-A-17: Adjustable Gas Piston System-Bulgarian AK74, BlackKNS Precision AGP-A-19: Adjustable Gas Piston System-Bulgarian 5.45 Krinkov, BlackKNS Precision AGP-A-1L: Adjustable Gas Piston System -SLR107UR, BlackKNS Precision AGP-A-20S: Adjustable Gas Piston System-Aresenal Rifle, Black, SmallKNS Precision AGP-A-23L: Adjustable Gas Piston System-C39V2 Pistol, Black, LargeKNS Precision AGP-A-3: Adjustable Gas Piston System-7.62 Krinkov, BlackKNS Precision AGP-A-3S: Adjustable Gas Piston System-7.62 Krinkov, Black, SmallKNS Precision AGP-A-5: Adjustable Gas Piston System-M85, BlackKNS Precision AGP-A-6: Adjustable Gas Piston System-AMD65, BlackKNS Precision AGP-A-7: Adjustable Gas Piston System -Draco, BlackKNS Precision AGP-A-9: Adjustable Gas Piston System- AK74, BlackKNS Precision AGP-A-16XX: Adjustable Gas Piston System- VEPR Large Bore, BlackKNS Precision AGP-A-10S: Adjustable Gas Piston System-AKM, Black, SmallKNS Precision AGP-A-18: Adjustable Gas Piston System-Valmet M76, Black, LargeKNS Precision AGP-A-2: Adjustable Gas Piston System-WZ89 Onyks, BlackKNS Precision AGP-A-20L: Adjustable Gas Piston System-Aresenal Rifle, Black, LargeKNS Precision AGP-A-23S: Adjustable Gas Piston System-C39V2 Pistol, Black, SmallKNS Precision AGP-A-25: Adjustable Gas Piston System-Galil Ace Pistol-5.56/7.62x39, BlackKNS Precision AGP-A-26: Adjustable Gas Piston System-Mini Draco, BlackKNS Precision AGP-A-8: Adjustable Gas Piston System-Galil Ace Rifle, BlackKNS Precision AGP-A-10: Adjustable Gas Piston System- AKM Large Bore, BlackKNS Precision AGP-A-4: Adjustable Gas Piston System- M92, BlackKNS Precision AGP-A-13: Adjustable Gas Piston System- PSL, Black