HM Defense MonoBloc 223/5.56 AR15 Upper with MLOK Handguard

The HM Defense MonoBloc Upper is engineered for precision and durability featuring a 16-inch 4150 Chromoly match grade barrel expertly tripled honed and button rifled for superior performance. Its integral machined patented gas block and carbine gas system ensure reliability in any condition. The upper showcases a 15-inch M-LOK free-floating handguard made from 6061T6 aluminum offering versatility and strength in a sleek black hard coat anodized finish. Both the upper and lower receivers are