Rise Armament Bolt Carrier Group 223 Rem,5.56x45mm NATO Black Nitride Steel AR-15

A complete AR-15 bolt carrier group from RISE Armament with a black nitride finish, for builders and owners replacing or upgrading a BCG in a .223 Rem / 5.56 NATO rifle. Each bolt is individually MPI tested.

• Carrier: 8620 tool steel, heat treated and case hardened; full-auto profile
• Bolt: 9310 steel, individually MPI tested
• Gas key: tool steel, grade 8 hardened fasteners, staked
• Cam pin: 4140 steel
• Extractor: tool steel, shot peened
• Finish: black nitride
• Weight: 11.6 oz

Check headspace with gauges when installing a new bolt in an existing barrel, and lubricate before first use.