HM Defense 16MBUP556 MonoBloc Upper 223 Rem/5.56x45mm NATO 16″ 4150 Chromoly Barrel w/Black Cerakote Finish CNC Machined Muzzle Brake Mid-Length Gas System 15″ Free-Float M-Lok Handguard M16 Bolt Carrier Group Anodized 7075-T6 Aluminum

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.

Brand	HM Defense
Category	Uppers
Model	MonoBloc
Caliber	5.56x45mm NATO
Barrel Length Range	16″ to 16.99″
Firearm Fit	AR-15
Gun Platform	AR-Style
Sights	Optic Ready
Barrel Finish	Black Cerakote
Muzzle	Muzzle Brake
Twist	1:8″
Type	Complete
Handguards	15″ M-LOK
Receiver Material	7075-T6 Aluminum
Barrel Description	Chrome Moly Match Grade
Barrel Length	16″
Receiver Finish	Black Anodized
Weight	4.60 lbs
Handguard Finish	Black Hard Coat Anodized

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