Brownells 75th Anniversary - A Shooting Heritage

True, match-spec bolt carriers increase cycling efficiency for greater dependability and less chance of malfunction. Machined to military specs, hardened and heat treated, then hard-chrome plated for a much lower co-efficient of friction between the upper receiver and carrier. Inside surfaces of bolt recess are polished and also hard-chromed for a better gas seal and less carbon build-up. Includes hard-chromed gas key and stainless steel screws.

AR-15, Issue:09, Page:011
Big Book Catalog, Issue:67, Page:012

SPECS: Machined 8620 steel, Rc 58.

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Cartridge: 5.56 mm NATO

Finish: Silver

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