RISE BOLT CARRIER GROUP AR15 BLACK NITRIDE

RISE Armament advanced bolt-carrier group (BCG) manufactured with precision and individually inspected to ensure high-level performance – Key Features – High-strength and easy-to-clean black nitride finish – Individually MPI tested – Bolt: 9310 MPI tested – Carrier: 8620 tool steel heat treated and case hardened – Gas key: tool steel – grade 8 hardened fasteners and staked properly – Cam pin: 4140 steel – Extractor: tool steel shot peened