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Flawless Operation at an Affordable Price

The Brownells M16 5.56 Complete Bolt Carrier Group is an affordable option that is built and tested to provide flawless operation in any AR-15 or M16.

The Brownells M16 5.56 Complete Bolt Carrier Group features a bolt fabricated from 9310 steel that includes a heat-treated and shot-peened finish. The bolt carrier itself is built using 8620 steel, which features a hardened finish. The whole BCG is completed with a nickel-boron coating.

  • Steel quality assured with magnetic particle inspection
  • Features extractor with rubber insert and spring
  • Gas-key screws are torqued and staked
  • Designed for use with all 5.56-NATO-based cartridge cases.

The Brownells M16 5.56 Complete Bolt Carrier Group features a full assembly that includes the bolt, bolt carrier, gas key, firing pin, cam pin and a firing pin retaining pin.


Big Book Catalog, Issue:72, Page:017

BROWNELLS - M16 5.56 BOLT CARRIER GROUP NICKEL BORON MP

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In Stock

Cartridge: 5.56 mm NATO

Finish: Nickel-Boron