The Noveske 5.56/300 BLK bolt carrier group is a mil-spec BCG from the same shop that builds Noveske’s own rifles and uppers (Noveske part no. 05000429). Noveske Rifleworks uses a full-auto profile carrier with a staked carrier key and chrome-lined gas key and bolt bore, then finishes it in black phosphate. The bolt is shot peened and magnetic-particle tested before it leaves the shop. The standard bolt face runs both 5.56mm and 300 Blackout, so one carrier group can serve two common AR-15 chamberings. It is a straightforward, quality BCG for a new build or a replacement in a working rifle.

Key Specifications

• The bolt face suits 5.56mm and 300 Blackout, so it works in uppers chambered for either cartridge.
• The carrier is a full-auto profile, which adds mass for smoother cycling.
• The carrier key is staked, keeping the gas key screws from backing out under heavy firing.
• Both the gas key and carrier bolt bore are chrome lined for corrosion resistance and easier cleaning.
• The finish is black phosphate, which holds lubricant on the bearing surfaces.
• The bolt is shot peened to relieve surface stress and resist cracking.
• Each bolt is MP tested to catch hidden flaws before it ships.

Frequently Asked Questions

Does it work for 300 Blackout? Yes. Noveske lists this bolt carrier group for 5.56mm and 300 Blackout, both of which use the standard bolt face.

Is it mil-spec? Noveske describes it as mil-spec, with a full-auto profile carrier, staked carrier key and shot-peened, MP-tested bolt.

What finish does it have? The carrier group has a black phosphate finish, with chrome lining in the gas key and the carrier bolt bore.

Buy the Noveske 5.56/300 BLK Bolt Carrier Group

A BCG is the heart of the rifle, and Noveske builds this one to the same standard as the guns that carry its name. Find it with the rest of our AR bolt carrier groups and order from our Lubbock, Texas gun shop for fast shipping.