FosTech AR-15 Complete Bolt Carrier Group Black

Enhance your AR-15 with the FosTech AR-15 Complete Bolt Carrier Group in Black, designed for exceptional reliability and performance. This full-auto M16 cut BCG is ideal for .223, 5.56, and 300BLK calibers. It features a shot-peened, magnetic particle inspected 9310 alloy steel bolt, and a hardened tool steel extractor with a Mil-Spec Viton O-Ring for enhanced durability. The 8620 steel bolt carrier is designed with a heavy profile M16 cut and a black nitride finish, offering superior corrosion resistance. Its 4130 steel gas key is Grade 8 torqued and staked to Mil-Spec standards for secure and reliable operation. The cam pin and firing pin, made from 4140 and 8740 steel respectively, include a hard chrome-plated firing pin for smooth function. Proudly made in the USA, this BCG weighs 11.6 ounces, making it an essential upgrade for AR-15 enthusiasts seeking improved performance.