Brownells 75th Anniversary - A Shooting Heritage

Outstanding Performance - Models For A Variety Of Chamberings

Complete, mil-spec assembly comes with bolt, carrier, and firing pin ready to drop into your rifle. Full-length shroud on M16-style carrier is designed for tripping auto sear on full-auto military and law enforcement rifles. Includes forward assist notches. Chrome-lined carrier key installed with properly torqued and staked screws to prevent gas leakage that can lead to short stroking. Bolt is machined from 9310 steel, shot peened, and magnetic particle inspected (MPI) for defects.

AR-15, Issue:11, Page:013
Big Book Catalog, Issue:69, Page:012

SPECS: M16 Bolt Carrier & Bolt Carrier Group.  Bolt – 9310 steel, shot peened, MPI tested.  Carrier – 8620 steel.  Carrier Group includes carrier, gas key, firing pin, cam pin, firing pin retaining pin & complete bolt. Carrier Only iSEPncludes carrier, and staked gas key installed.

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Cartridge: 5.56 mm NATO

Finish: Phosphate