BROWNELLS 308AR BOLT CARRIER GROUPS

Brownells 308AR bolt carrier group. The Complete .308 Bolt Carrier Group is designed to operate reliably in DPMS LR-308 pattern rifles chambered in .308 and related cartridges. The bolt is machined from 9310 steel and heat treated, and the carrier is formed from hardened 8620 steel. Both parts are magnetic particle inspected to ensure there are no hidden microscopic flaws. Carrier has forward assist notches; extractor installed with rubber insert and spring; gas key screws torqued and staked. For use in DPMS LR-308 pattern upper receivers only; NOT compatible with Armalite rifles. Finishes available include Black Nitride or Nickel Boron, both complete with firing pin, firing pin retaining pin, cam pin, gas rings, gas key, extractor, and ejector installed.