.223/5.56 RISE ARMAMENT BOLT CARRIER GROUP- NITRIDE (MADE IN USA)
.223/5.556 RISE ARMAMENT BOLT CARRIER GROUP- NITRIDE (MADE
IN USA)
Rise Armament advanced bolt carrier group manufactured with
precision and individually inspected to ensure high-level performance
Specification
Finish: Black Nitride
Bolt: 9310 MPI tested
Carrier: 8620 tool steel-heat treated and case hardened
Gas key: Tool steel
Fasteners- Tool steel – grade 8 also properly staked
Cam Pin: 4140 steel
Extractor: Tool steel- shot peened hardened
Mil-Spec
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