RISE BOLT CARRIER GROUP AR15 NICKEL BORON SILVER

RISE Armament advanced bolt-carrier group (BCG) manufactured with precision and individually inspected to ensure high-level performance. Coated with nickel boron to reduce friction and improve overall performance. – Key Features – Coated with nickel boron to reduce friction and improve the rifle’s overall performance – Unit weight: 11.6 oz. – 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