LMT MONOLITHIC 5.56X45 NATO RIFLE BARREL Designed for the LMT monolithic receiver, this barrel utilizes a low profile gas block, straight gas tube, and A2 birdcage for reduced flash. The barrel is coated and cryogenically treated for long term durability. AVAILABLE OPTIONS: 10.5″ Chrome Lined 5.56×45 (.223) 1:7″ RH twist barrel 11.5″ Chrome Lined 5.56×45 (.223) 1:7″ RH twist barrel 12.5″ Chrome Lined 5.56×45 (.223) 1:7″ RH twist barrel 14.5″ Chrome Lined 5.56×45 (.223) 1:7″ RH twist barrel 16″ Chrome Lined 5.56×45 (.223) 1:7″ RH twist barrel 20″ Chrome Lined 5.56×45 (.223) 1:7″ RH twist barrel SPECIFICATIONS: Barrel Material: Chromoly Operating Method: Direct Impingement Rifling Twist Rate: 1:7" Barrel Caliber: 5.56×45