Brownells 75th Anniversary - A Shooting Heritage
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Reliability for the Discerning Operator

The Brownells M16 5.56 Complete Bolt Carrier Group is designed to work easily and reliably in any AR-15 or M16 rifle chambered in 5.56x45mm, 300 AAC Blackout or .223 Remington.

The Brownells M16 5.56 Complete Bolt Carrier Group is constructed with a bolt made from 9310 steel, which is finished with a heat treatment and shot peening. The carrier is fabricated from 8620 hardened steel. Each element of the bolt-carrier group is finished in a black-nitride coating.

  • Magnetic-particle inspected material
  • Extractor includes spring and rubber insert
  • Includes torqued and staked gas key
  • Functions with any cartridge based on the 5.56 NATO cartridge case

The Brownells M16 5.56 Complete Bolt Carrier Group comes with a bolt, bolt carrier, gas key, firing pin, cam pin and a firing pin retaining pin.


Big Book Catalog, Issue:71, Page:011

BROWNELLS - M16 5.56 BOLT CARRIER GROUP NITRIDE MP

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Cartridge: 5.56 mm NATO

Finish: Black Nitride