Alex Pro Firearms M16 Nickel Boron Bolt Carrier Group, machined to mil-spec standards, and nickel boron-plated for smoothness. APF products are made right here in The Guide's own backyard-Alexandria, Minnesota. We know the folks at APF. We know their products are designed and built in-housea |which means they can deliver outstanding quality at a fair price. Bolt: 9310 steel, nickel boron-plated Shot-peened, heat-treatedCarrier: SAE 8620, nickel boron-plated Heat-treated Full-autoExtractor: CNC-machined, nickel boron-plated Shot-peened, heat-treatedFiring Pin: Swiss-machined Heat-treated, precision-groundGas Key: CNC-machined, nickel boron plated Heat-treated Torqued and staked to Carrier mil.-specCam Pin: Nickel Boron plated Swiss-machined Heat-treated Order now!
