HM Defense 125MBUP556 MonoBloc Upper 223 Rem 5.56x45mm NATO 12.50 Black Cerakote Barrel 7075T6 Aluminum Black Anodized Receiver 10.37 MLOK FreeFloat Handguard for AR15 Pistol

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 freefloating and uses a Picatinny rail Magpul MLOK and machined from 6061T6 aluminum. Upper and Lower receiver are made of 7075T6 aluminum with a hard coat anodized finish. The MonoBloc Upper also includes a patented HMB bolt MilSpec components charging handle and a dust cover with an American Flag.