5.56 NATO &.223 Wylde

Micro ARP AR-15 5.56 NATO 5" Complete Upper Assembly | Gold Spitfire QD Blast | M-LOK | Moriarti Armaments

Stand out with the Moriarti Micro ARP AR-15 5.56 NATO 5" Complete Upper Assembly, featuring an eye-catching Gold Spitfire QD Blast muzzle device and premium components engineered for ultra-compact AR pistol builds. Designed for shooters who demand reliability, lightweight performance, and distinctive styling, this ARP upper delivers exceptional performance in a compact package.

Built around a 5-inch 4150 Chrome Moly Vanadium barrel with a 1:5 twist, this Micro ARP upper is equipped with a micro gas system, 4-inch slim-profile free-float M-LOK handguard, and 1/2x28 threaded muzzle for compatibility with a variety of muzzle devices and suppressor mounting systems. The Gold Spitfire QD Blast enhances the appearance while directing muzzle blast forward for a more comfortable shooting experience.
Compatible with mil-spec AR-15 lower receivers, this upper is ideal for building a mini ARP, upgrading an existing micro AR pistol, or creating a one-of-a-kind custom AR platform.

Bolt Carrier Group and Charging Handle are sold separately.

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Specifications

• Platform: AR-15 / Micro ARP

• Caliber: 5.56 NATO / .223 Rem

• Barrel Length: 5"

• Barrel Material: 4150 Chrome Moly Vanadium

• Barrel Finish: Black Nitride

• Twist Rate: 1:5

• Gas System: Micro

• Gas Block: .750 Low Profile Steel, Nitride

• Handguard: 4" Slim Free-Float M-LOK

• Muzzle Device: Gold Spitfire QD Blast

• Muzzle Threads: 1/2x28

• Overall Length: 15"

• BCG: Not Included

• Charging Handle: Not Included

• Compatibility: Mil-Spec AR-15 Lower Receivers

• Made in USA

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Shop Related Categories

• Micro ARP Collection

• Silencers

• Gold AR-15 Collection

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Can I install this 5-inch upper on any Mil-Spec AR-15 lower?

Yes. This 5.56 NATO complete upper assembly is designed to fit virtually any Mil-Spec AR-15 lower receivers. Before installation, verify that your lower receiver and all associated components are compatible with your intended build and comply with all applicable laws.