M16 5.56 Bolt Carrier Group Nickle Boron
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specifications

Manufacturer:

Rise Armament

Platform:

AR-15

Caliber:

5.56 mm NATO

Finish:

Nickel Boron

    M16 5.56 Bolt Carrier Group Nickle Boron

    Caliber Manufacturer Color Weight Merchant Price Merchant URL
    5.56 mm NATO Rise Armament None None None $179.99 Brownells Add

    Prices last checked September 2026. Prices and availability change often, so confirm on the retailer's site.

    RISE Armament advanced M16 Bolt Carrier Group (BCG) with Nickel Boron finish is manufactured with precision and individually inspected to ensure high-level performance. Coated with nickel boron to reduce friction and improve overall performance. 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 Mfg: Rise Armament

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