BROWNELLS - M16 BOLT CARRIER GROUP

Complete M16 Bolt Carrier Group: Fully assembled Bolt Carrier Group; including the bolt, bolt carrier, gas key, firing pin, cam pin, and firing pin retaining pin Bolt is Magnetic Particle Inspected (MPI) The Bolt is machined from Carpenter 158 steel Following machining, the Bolt is heat treated and shot peened Installed extractor includes black rubber insert with spring M16 Bolt Carrier is machined from 8620 steel and hardened Interior of Bolt Carrier Carrier Key are chrome lined M16 Bolt Carrier will function in semi-auto or full-auto AR15/M16 Gas Key Screws are properly torqued and staked Bolt and Bolt Carrier feature a matte black mil-spec finish