Enhance your AR15 build with this high-quality 16.10-inch carbine barrel sub-assembly from CMMG designed for the 223 Remington/5.56 NATO caliber. Featuring a durable nitride finish this barrel delivers exceptional performance and longevity. The 1:7 twist rate ensures optimal stability for your rounds while the M4 profile offers a classic reliable design. With a properly installed M4 barrel extension this component is perfect for those seeking precision and reliability in their custom AR15 upper assembly.