WMD Guns AR-10 .308 Nickel Boron Bolt Carrier Group

Add superior dependability to your upper receiver group build with the WMD Guns® AR-10 .308 Nickel Boron Bolt Carrier Group. The cam pin is manufactured, heat-treated, hardened, and certified per government drawings and the carrier features case hardened 8620 steel construction for lasting dependability. To top it off, the corrosion-resistant Nickel Boron coating helps reduce fouling adherence and protects against chipping, spalling, or flaking. The bolt features case hardened 9310 shot peened and magnetic particle inspected steel construction while the extractor is manufactured, heat-treated, and hardened for unmatched strength and durability. Further, the firing pin is manufactured, heat-treated, hardened, chromed, and certified per government drawings while the gas key is hardened to USGI Specifications and attached using grade 8 hardened fasteners to ensure smooth and proper cycling.