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CMMG MK3 308 Bolt Carrier Group
This complete CMMG MK3 308 Bolt Carrier Group is a drop in solution for your next AR10/308 build. Machined from 8620 steel, the chrome lined carrier is finished in durable black phosphate. The bolt is machined from 9310 hardened steel and features a S7 tool steel extractor. Includes carrier, assembled bolt, stainless steel firing pin, cam pin, and firing pin retention pin.
Part #: 38BA423
Platform: AR10 | 308
Bolt Carrier Group, Upper Receiver Parts