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HM Defense

HM Defense MonoBloc Upper 125MBUP556

Product Code : 854164007203


Mfg Item #: 125MBUP556

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 rail, 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.

SightsNone, Optic Ready
Caliber223 Rem
Handguards10.37" M-LOK Free-Float
Barrel FinishBlack Cerakote
Barrel Length12.50"
Handguard FinishBlack Hard Coat Anodized
Barrel Description4150 Chrome Moly Match Grade
Barrel Length Range12" to 12.99"

Determined at checkout.