The Rise Armament AR-15 Bolt Carrier Group Black Nitride is a precision-made AR-15 carrier group from Rise Armament that is individually inspected before it ships (brand part no. RA-1011-BLK). Its black nitride finish is strong, easy to clean and holds up round after round. Inside, the bolt is 9310 steel that has been MPI tested, the carrier is heat-treated 8620 tool steel, and the gas key is staked in place with grade 8 hardened fasteners. It is a straightforward replacement or build-kit upgrade for a .223/5.56 rifle.

Key Specifications

• The finish is black nitride, a strong, easy-to-clean coating.
• The group is built for AR-15 rifles in the .223/5.56 class.
• The bolt is 9310 steel, MPI tested, the high-stress part of the group.
• The carrier is 8620 tool steel, heat treated and case hardened, for wear resistance where the group rides the receiver.
• The gas key is tool steel with grade 8 hardened fasteners, properly staked in place.
• The cam pin is 4140 steel, a strong material for the part that unlocks the bolt.
• The extractor is shot-peened tool steel, which improves its fatigue life.
• Quality control is individual MPI testing of every group.
• Every group is also individually inspected to ensure high-level performance.

Frequently Asked Questions

Is this the black nitride or nickel boron group? This listing is the black nitride finish. RISE also sells the AR-15 carrier group in nickel boron under a separate part number.

What is the bolt made from? The bolt is 9310 steel and is MPI tested, paired with an 8620 tool steel carrier that is heat treated and case hardened.

How is the gas key attached? The tool steel gas key is secured with grade 8 hardened fasteners and is staked properly.

Buy the Rise Armament AR-15 Bolt Carrier Group Black Nitride

The carrier group is the part of an AR that sees the most abuse, so material and finish matter more here than almost anywhere else. Order it from our Lubbock, Texas gun shop for fast, direct shipping, and browse more AR bolt carrier groups for your build.