CMMG AR-15 16.1 Inch Lightweight Salt Bath Nitride Barrel 5.56 NATO 1:7 Twist

The CMMG 16.1-inch Lightweight Salt Bath Nitride (SBN) barrel is built for lightweight AR-15 upper builds while maintaining durability and reliability. Featuring a light taper profile and a corrosion-resistant salt bath nitride finish, this barrel includes a properly installed M4 barrel extension and is assembled with correct headspacing. A 1:7 twist rate and 5.56x45 NATO chamber support a wide range of common 5.56 loads, while the mid-length gas port helps balance cycling and recoil impulse.\n\nProduct Highlights\n- 16.1" lightweight, light taper profile ideal for custom lightweight AR-15 builds\n- Salt Bath Nitride finish for enhanced wear resistance and corrosion protection\n- 1:7 twist with a 5.56x45 NATO chamber for versatile 5.56 NATO performance\n- Mid-length gas port for balanced operation and smoother cycling characteristics\n- Threaded 1/2-28 muzzle with a .625" gas journal for common AR-15 compatibility\n\nSpecs\n- Brand: CMMG\n- Manufacturer Part Number: CMM55D470B\n- UPC: 815835018102\n- Platform: AR-15\n- Caliber/Chamber: 5.56x45 NATO\n- Barrel Length: 16.1 in\n- Profile: Light Taper\n- Material: 4140CM\n- Finish: Salt Bath Nitride\n- Twist Rate: 1:7\n- Muzzle Threads: 1/2-28\n- Gas System Length: Mid-length (mid length gas port)\n- Gas Journal: 0.625 in\n- Extension: M4 barrel extension (installed)\n- Assembly Note: Properly headspaced barrel sub-assembly