APF AR-10/..308 Winchester Nickel Boron Bolt Carrier Group Nickel. Nickel Boron Plated CAM PIN: Swiss machined Heat Treated Nickel Boron Plated. Specifications for APF AR-10/..308 Winchester Nickel Boron Bolt Carrier Group: Manufacturer: APF Color: Nickel Fabric/Material: Steel Caliber: .308 Winchester Gun Make: AR Platform Gun Model: AR-10 Features of APF Alex Pro Firearms AR-10 Bolt Carrier Group .308 Nickel Boron: BOLT: Carpenter 158 CARRIER: SAE 8620 EXTRACTOR: CNC machined FIRING PIN: Swiss machined GAS KEY: CNC machined CAM PIN: Swiss machined Package Contents: APF Alex Pro Firearms AR-10 Bolt Carrier Group .308 Nickel Boron What firearm models does the manufacturer say APF AR-10/..308 Winchester Nickel Boron Bolt Carrier Group is compatible with? The manufacturer suggests that APF AR-10/..308 Winchester Nickel Boron Bolt Carrier Group is compatible with AR-10APF RPUP046: AR-10/..308 Winchester Nickel Boron Bolt Carrier Group Nickel