The FailZero 7.62x39 Bolt Carrier Group (BCG) (No Hammer) comes fully assembled and ready to drop into mil spec AR-15s chambered for 7.62x39. All of the critical parts are coated with FailZero's EXO Nickel Boron which provides permanent dry lubricity, extreme durability, corrosion resistance and will reduce friction and improve the overall performance of your 7.62x39 AR-15 based rifle. Included is a heavy spring, silicone insert, and o-ring to give better extraction tension as well as a Black Rifle Arms Enhanced Firing Pin that has a longer length as well as other dimensional changes for better performance with most Russian ammo including Tula.
Wet lubrication is never needed. The EXO Technology dissipates heat so efficiently that the rifle will run cooler and cleaner since wet lubrication isn't needed.
All FailZero parts are mil-spec quality.
Nickel Boron treated parts include:
- Bolt & Extractor (7.62x39 compatible)
- Bolt Carrier (M16 style)
- Cam Pin
- Carrier Key
- Black Rifle Arms Enhanced Firing Pin