CMC AR-15 5.56 NATO 11.5" Barrel, 1:7 Twist, Nitride

CMC AR-15 5.56 NATO Barrel

When you're building or upgrading an AR-15, the barrel is your foundation. The CMC AR-15 5.56 NATO barrel delivers the performance serious shooters expect, combining proven design with practical versatility.

Design and Specifications

This barrel features a government profile—the standard that has proven itself across countless platforms. The 11.5" length makes it ideal for compact carbine builds while maintaining the velocity needed for effective 5.56 NATO performance. The 1:7 twist rate is fast enough to stabilize heavier defensive and match-grade projectiles, giving you flexibility across a wide range of ammunition weights.

Construction and Finish

CMC is known for quality machining and attention to detail, and this barrel reflects that philosophy. The black nitride finish provides excellent corrosion resistance and a durable surface that stands up to hard use. The non-fluted design keeps the barrel rigid and manageable in weight without sacrificing the strength you need where it matters most.

What's Included

This package comes complete with a gas block and carbine-length gas tube, giving you everything needed to get your build running.

Practical Performance

Whether you're assembling a new rifle from scratch or upgrading an existing build, this barrel offers the accuracy and reliability needed to get the most out of your platform. Shooters consistently report solid construction, clean machining, and consistent accuracy potential across a variety of ammunition types.