HM Defense 16MBUP 5.56 Upper 223/5.56 NATO 16" MONOBLOC Barrel, 1:8 Twist Muzzle Brake

HM Defenses mission is to advance AR15 / AR10 rifle technology to its highest level. They strive to create rifles that are more accurate, easier to maintain and dependable in extreme conditions. Features : Patented HM MONOBLOC Barrel with integrally machined Gas Block, Free-float rail with Picatinny and M-Lok, Patented HMB Bolt which replaces cam pin hole with cam pin socket and tapered cam pin