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NOTE: All BCM bolt carrier groups are factory test fired. The BCG may show handling marks consistent with these quality control procedures.

The Bravo Company Manufacturing Bolt Carrier Group, with a parkerized exterior and chrome lined carrier interior, has been machined to USGI specifications. This M16/M4 carrier includes a properly staked gas key which has also been chrome lined, heat treated per MIL-SPEC, and secured to the carrier with grade 8 fasteners.


MIL-SPEC carpenter no. 158 steel (bolt)

High pressure tested and magnetic particle inspected

Shot peened bolt

Chrome lined carrier

Chrome lined gas key

Gas key hardened to USGI specifications

Grade 8 hardened fasteners

Key staked per MIL-SPEC

Tool steel extractor

BCM extractor spring

Black extractor insert

MIL-SPEC crane O-ring

The bolt assembly is machined from carpenter No. 158 steel, shot peened for increased strength, and is high pressure tested and magnetic particle inspected. Includes tool steel machined extractor, ejector, and BCM extractor spring.

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