Moriarti AR-15 16" Blue Diamond Tactical Upper – Stainless Fluted Barrel w/ Triport Brake

Blue & Tiffany Blue

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

Bring performance and bold design together with the AR-15 5.56/.223 16" Blue Diamond Tactical Upper Assembly, exclusively by Moriarti Armaments. This upper is built around an eye-catching blue nitride-plated fluted stainless steel barrel, precision-machined for shooters who demand both accuracy and a standout appearance.

The 16" HBAR contour barrel is crafted from 416 stainless steel, stress relieved and hardened to 26–32 RC, featuring Moriarti’s exclusive blue diamond fluting for improved cooling and unique styling. Chambered in 5.56 NATO, the barrel also accepts .223 Remington, with a 1:9 twist and 6-groove button rifling for reliable performance. Finished with a triport muzzle brake, it reduces recoil and muzzle rise for improved control.

A mil-spec A3 flat-top upper receiver forged from 7075-T6 aluminum, black hardcoat anodized and Teflon-coated, houses the barrel and ensures durability. Includes M4 feedramps, forward assist, and dust cover pre-installed.

The upper is complemented by a 12" MLOK free-float handguard, CNC-machined from aircraft-grade aluminum and finished in black hardcoat anodizing. Rail design may vary slightly due to inventory, but performance remains uncompromised.

Key Features:

• Caliber: 5.56 NATO / .223 Rem

• Barrel: 16" HBAR, 416 Stainless Steel w/ Blue Diamond Fluting

• Twist Rate: 1:9 RH, 6-Groove Button Rifled

• Finish: Blue Nitride Plated

• Gas System: Carbine Length

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

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

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

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

• Compatibility: Works with any mil-spec AR-15 lower

• Excludes: BCG and Charging Handle (Available Separately)

Please allow 2–4 weeks for delivery. Rail design may vary slightly based on inventory.

Complete your build with Moriarti AR-15 Lower.