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: 10.5a ^2 Chrome Lined 5.56A-45 (.223) 1:7a ^2 RH twist barrel 11.5a ^2 Chrome Lined 5.56A-45 (.223) 1:7a ^2 RH twist barrel 12.5a ^2 Chrome Lined 5.56A-45 (.223) 1:7a ^2 RH twist barrel 14.5a ^2 Chrome Lined 5.56A-45 (.223) 1:7a ^2 RH twist barrel 16a ^2 Chrome Lined 5.56A-45 (.223) 1:7a ^2 RH twist barrel 20a ^2 C Mfg: Lmt Defense