Diamondback DB15 Knight's Armament 5.56mm NATO 16in Matte Black Anodized Semi Automatic Modern Sporting Rifle - 30+1 Rounds - The Knights Armament and Diamondback Firearms collaboration begins with Knights Armament providing their proprietary chambered, Rifled and Chrome Lined Cold Hammer Forged Barrel Blank. Diamondback Firearms then finishes the profiling of the Barrel and performs final assembly, resulting in an end product with exceptional Accuracy and Excellent Longevity. Threaded Barrel : 1/2 x 28 ; Knights Armsment Cold Hammer Forged Barrel Blank - At the heart of this AR-15 lies a premium chrome-lined, cold hammer forged barrel. This Knight's Armament and Diamondback Firearms collaboration begins with Knight's Armament providing their proprietary chambered, rifled, and chrome lined cold hammer forged barrel blank. Diamondback Firearms then finishes the profiling of the barrel and performs final assembly, resulting in an end product with exceptional accuracy and excellent longevity.; Unmatched Quality - For decades, Knights Armament has set the gold standard for military and civilian firearms. This barrel is constructed with a proprietary stainless steel blend and machined to Knights Armament's rigorous standards.; Durability You Can Count On - The chrome lining ensures excellent resistance to heat, corrosion, and wear, extending barrel life even under the most demanding conditions.; Heat Management - Enhanced heat resistance means your rifle performs better, even during high rates of sustained fire.; Unparalleled Precision - The cold hammer forging process produces a barrel with exceptional dimensional accuracy, tighter tolerances, and a smooth bore for consistent shot placement.; Forged 7075-T6 Aluminum Lower Reciever with Magpul Enhanced Trigger Gaurd - Built for durability, the Carbon Series DB15 lower is machined from forged 7075-T6 aluminum and is hardcoat anodized for rugged dependabilty.; Fuu M-Lok Anti-Rotation S-Rail with Int