AR-15 Bolt-Carrier Group – Nickel Boron

RISE Armament Nickel Boron Bolt Carrier Group, AR-15 Bolt Carrier Group Nickel Boron

AR-15 Bolt-Carrier Group – Nickel Boron


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RISE Armament advanced bolt-carrier group (BCG) manufactured with precision and individually inspected to ensure high-level performance. Available in black nitride finish or coated with nickel boron to reduce friction and improve overall performance. A black nitride version is also available.

Key Features

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