TOOLCRAFT NITRIDE CARPENTER 158 BOLT CARRIER GROUP
Jerome, ID 83338
AR15 Toolcraft, 5.56/.223, Nitride Finish, Carpenter No. 158 Steel, Full Auto Profile, Gas Key: Grade 8 Hardened Fasteners, Staked per MilSpec. This Toolcraft Nitride BCG is made with a carpenter 158 bolt with a full-auto profile, designed to be used in AR-15 & M-16 style rifles. Bolt is magnetic particle inspected for a uniform quality and operational reliability.