Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

Matched Set Provides Smooth, Reliable Cycling

Steel bolt and bolt carrier combos are available in three ultra-hard, wear-resistant, self-lubricating finishes. The IonBond Diamond Coat for natural lubricity, positive cycling, and easy cleaning. Economical yet durable Diamond Coat consists of an ion-thick layer of carbon deposited on the bolt, carrier, gas key firing pin and cam pin for increased hardness and wear resistance over a traditional phosphate finish. Machined to military specs to ensure correct fit and operation in standard, mil-spec semi-auto receivers, these parts are function-tested before leaving the factory and may exhibit some light fouling.

AR-15, Issue:08, Page:010
Big Book Catalog, Issue:67, Page:605
New Product Supplement, Issue:631, Page:003

SPECS: Machined, heat-treated Carpenter 158 alloy (bolt) and 8620 chrome moly (carrier) steel, with Hard Chrome, Titanium Nitride, or black Diamond Coat finish. Fits semi-auto .223/5.56mm AR-style rifles.


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Cartridge: 223 Remington

Finish: Black