AR-15 Bolt Carrier Assy with Bolt in 5.56mm
AR-15 Bolt Carrier Assy with Bolt in 5.56mm. These carriers are made by a military subcontractor and are machined to Mil-Spec, and have chrome lined carrier key, chrome lined inside carrier, properly staked. This bolt carrier includes cam pin, firing pin, bolt, retaining pin, carrier key, and bolt carrier. This is fully assembled ready to drop into your upper receiver.