Griffin Armament Mil-Spec Gas Pocket Bolt Carrier Group, .223 Remington/5.56 NATO BCG, 8620 Steel, Nitride, Suppressor/Silencer Optimized

Griffin Armament Mil-Spec Gas Pocket Bolt Carrier Group (GAGPBCG) for AR-15 in .223 Remington / 5.56 NATO. 8620 steel bolt carrier with nitride finish; features C158 manganese phosphate bolt, S7 tool steel extractor, 4340 cam pin, 8620 black nitride carrier, and 4140 black nitride carrier key staked to mil-spec TDP. Gas pocket design reduces operator ear signature and gas blowback when used with suppressors. Anti-tilt ring helps reduce bolt lug impact to the barrel extension lug recesses. Weight: 11.3 oz.