Product Description
- Heated TreatedĀ 8620
- Bolt Carrier FailZero EXO Nickel Boron Coating
- 5.56×45 Firing Pin, Mil Spec, Chromed Plated
- Integrated Polymer Buffer
- Eliminate metal on metal contact
- Eliminates contact between the hardened steel carrier, aluminum receiver extension and buffer
- Self lubricating, shock absorbing, and has seven times the abrasion resistance of carbon steel
- Reduction in felt recoil and vibration