F-1 Firearms DuraBolt Bolt Carrier Group Assembly 762 NATO DLC Finish True Black

F-1 Firearms, DuraBolt, Bolt Carrier Group Assembly, 762 NATO, DLC Finish, True Black, Fits AR-10



DLC Coated, True Black

Carpenter 158 bolt that is ground after heat treat

8620 Steel Construction



F-1 Firearms DuraBolt direct impingement full auto rated AR10 bolt carrier group is compatible with DPMS spec large frame receiver sets and associated components.