Moriarti AR-15 16" Black Diamond Tactical Upper – Stainless Fluted Barrel, Xtreme Brake

5.56 NATO &.223 Wylde

AR-15 5.56/.223 16" Black Diamond Fluted Tactical Upper w/ 12" MLOK & Xtreme Brake | Moriarti Arms

Stand out with precision and style with the AR-15 5.56/.223 16" Black Diamond Tactical Upper Assembly from Moriarti Armaments—featuring an exclusive fluted stainless steel barrel, engineered only for Moriarti builds.

The 16” HBAR contour barrel is crafted from 416 stainless steel, hardened to 26-32 RC, and black nitride plated with custom diamond flutes for both heat dissipation and striking looks. Chambered in 5.56 NATO, this upper also supports .223 Rem ammo and features a 1:8 twist with 6-groove button rifling for excellent accuracy. Finished with an aggressive Xtreme muzzle brake, this upper is built for performance and aesthetics.

The upper receiver is a mil-spec A3 flat-top, forged from 7075-T6 aluminum, black hardcoat anodized and Teflon-coated for additional durability. It includes a forward assist and dust cover, and matches perfectly with the M4 feedramps of the barrel.

A 12" free-float MLOK handguard offers extended real estate for optics and tactical accessories, all machined from aircraft-grade aluminum and anodized in black.

???? Key Features:

• Caliber: 5.56 NATO / .223 Rem

• Barrel: 16" 416 Stainless Steel, HBAR Contour

• Finish: Black Nitride w/ Exclusive Diamond Fluting

• Twist Rate: 1:8 RH, 6-Groove Button Rifled

• Gas System: Carbine Length

• Gas Block: .750 Low Profile, Steel, Black Anodized

• Muzzle Device: Xtreme Muzzle Brake, 1/2x28

• Upper Receiver: A3 Flat Top, 7075-T6 Forged Aluminum, Black Anodized + Teflon Coated

• Handguard: 12" Free Float MLOK Mid-Length, Aircraft-Grade Aluminum

• Compatibility: Accepts any mil-spec AR-15 lower

• Excludes: BCG and Charging Handle (Available Separately)

Please allow 2–4 weeks for delivery. Handguard design may vary based on availability, but always meets Moriarti’s quality standards.

Looking to complete your build? Pair it with the Moriarti AR-15 Lower Receiver.