Stern Defense, Llc Ar-15 Sd-Bu45 Bolt Carrier .45acp Black

Having a .45 ACP pistol-caliber carbine requires the use of a bolt that's designed to provide reliable operation with the round, and the Stern Defense AR-15 SD-BU45 Bolt Carrier is purpose-built to provide the reliable, dependable, durable operation needed in a big-bore PCC. Each Stern Defense AR-15 SD-BU45 Bolt Carrier is machined from 8620 AISI steel and features a 4140 billet-steel extractor that ensures ejection every time. The carrier features a Glock cut and is treated with a manganese-phosphate finish. The bolt works in all mil-spec and Glock-pattern AR-15 upper receivers and is compatible with standard AR-15 charging handles. The carrier includes the firing pin, spring, r Mfg: Stern Defense, Llc