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HM Defense 16MBUP556 MonoBloc Upper  Rifle 223 Rem,5.56x45mm NATO 16 Black Cerakote
In StockSave 23%

Caliber

223/5.56

Type

parts

Last Seen

May 20, 2026

HM Defense 16MBUP556 MonoBloc Upper Rifle 223 Rem,5.56x45mm NATO 16 Black Cerakote

Sold byBattleHawk ArmoryPosted Apr 27, 2026

$611.10

$795.00

You save $183.90 (23% off)

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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 Am