HM Defense MonoBloc Upper 5.56 NATO / .223 Rem 16 Barrel

MonoBloc Upper Features The MonoBloc Upper features a HM barrel with an integral machined patented gas block and a carbine gas system. It is also 4150 Chromoly match grade tripled honed and button rifled. Its handguard is free-floating and uses a Picatinny rial Magpul M-LOK and machined from 6061-T6 aluminum. Upper and Lower receiver are made of 7075-T6 aluminum with a hard coat anodized finish. The MonoBloc Upper also includes a patented HMB bolt Mil-Spec components charging handle and a dust cover with an American Flag. MonoBloc Upper Specifications Caliber: 5.56x45mm NATO Model: MonoBloc Upper Barrel Length Range: 12 to 12.99 Sights: 16 to 16.99 Handguard Finish: Black Hard Coat Anodized Handguards: 10.37 M-LOK Free-Float Receiver Finish: Black Hard Coat Anodized Receiver Material: 7075 T6 Aluminum Twist: 1:8 Weight: 3.14 lbs Barrel Description: 4150 Chrome Moly Match Grade Barrel Finish: Black Cerakote Barrel Length: 16