Odin Works Bolt Carrier Group AR-15 .223/5.56x45mm NATO Black Nitride

The Odin Works Bolt Carrier Group is a true Mil-Spec replacement BCG engineered for the AR-15/M4/M16 platform. Designed to cycle .223 Remington and 5.56x45mm NATO ammunition, and also fully compatible with 300 Blackout, it features a Mil-Spec Type 2 bolt face and a full-auto/M16-style carrier profile so it drops into any standard AR-pattern upper receiver without modification.

The carrier is machined from case-hardened 8620 steel and finished in an advanced Black Nitride coating. This low-friction surface treatment reduces carbon buildup, improves wear resistance and lubricity, and gives the assembly a uniform matte-black appearance that holds up to hard use in the field or on the range.

Sold as a drop-in upgrade or replacement, this Odin Works BCG is an ideal choice for new-build rifles, parts swaps, or simply refreshing a worn carrier. Whether you are running a duty carbine, a range AR, or a hunting rifle, this Mil-Spec BCG delivers the durability and reliable cycling the AR-15 platform demands.