NIB-X AR-15 Bolt Carrier Group
Caliber 5.56, .223, 300 Blackout
This Bolt Carrier Group is Nickel Boron coated and features a Carpenter 158 shot peened bolt. The gas key is hardened and secured with Grade 8 fasteners,
and is staked per Mil-Spec. Includes bolt, carrier, firing pin, firing pin
retaining
pin,
cam
pin and gas key. This product is completely assembled and ready to drop into your upper.