Moriarti AR-380 Katusha .380 ACP 10.5" Glock Style Pistol – Minimalist Series, Non-LRBHO

AR-380

AR-380 Katusha Series .380 ACP 10.5" Glock Style Pistol – Non-LRBHO, M-LOK, Faux Can | Moriarti Arms

Introducing the AR-380 Katusha Series by Moriarti Arms—a minimalist pistol platform chambered in .380 ACP, designed for lightweight performance and simplicity. This 10.5" AR pistol is built for Glock-style magazine compatibility and delivers a smooth blowback operation ideal for recreational shooting, home defense, or range training.

At the heart of this build is a 10.5" 4150 CMV barrel with a medium profile and 1:16 twist, optimized for .380 Auto. The barrel is threaded 5/8x24 and finished with a faux suppressor-style thread-on shroud, giving it the aggressive aesthetic of a suppressed setup—without the added weight or complexity.

The upper features a slick-side A3 receiver with no forward assist or dust cover, reducing weight and creating a clean, minimalist profile. The 10" M-LOK free-floating handguard is constructed from lightweight aircraft-grade aluminum and hardcoat anodized to military specs for long-lasting durability. This upper does not include Last Round Bolt Hold Open (non-LRBHO) and is built for straightforward blowback operation.

The lower receiver is Moriarti’s MA-9 Glock-style billet lower, machined from 7075-T6 aluminum and fully assembled with Mil-Spec fire control components, mag catch, bolt release, and ejector. Finished with an SBA3 adjustable brace, this pistol provides stability and comfort in a compact package.

Product Specifications

• Series: AR-380 Katusha – Minimalist Pistol Line

• Caliber: .380 ACP

• Barrel Length: 10.5"

• Barrel Profile: Medium

• Barrel Material: 4150 Chrome Moly Vanadium

• Twist Rate: 1:16

• Muzzle Thread: 5/8x24

• Muzzle Device: Thread-on Faux Suppressor Shroud

• Operating System: Blowback

• Upper Receiver: A3 Slick Side, 7075-T6 Aluminum, No Forward Assist or Dust Cover, Hardcoat Anodized

• Handguard: 10" Free-Floating M-LOK, Lightweight Aircraft-Grade Aluminum

• Bolt Carrier Group: Ramped 9MM BCG (Included, blowback-optimized)

• Charging Handle: Standard AR-15 Charging Handle (Included)

• Lower Receiver: MA-9 Glock Style Billet Lower, 7075-T6 Aluminum

• Lower Features: Mil-Spec Fire Control Group, Ejector, Bolt Release, Mag Catch, MultiCal Markings

• Brace: SB Tactical SBA3 Adjustable Brace

• Magazine: Not included; compatible with Glock-style magazines 

• LRBHO: Not included (Non-LRBHO)

• Weight: Approx. 5 lbs

Compliance Notice

This pistol is configured for use with a forearm brace and is not designed to be shouldered. User is responsible for knowing and complying with all applicable federal and state firearm regulations.

FFL Shipping Instructions

This item must ship to a licensed FFL dealer. Please have your dealer email a signed copy of their FFL referencing your order number to: info@moriartiarmaments.com. Orders will not ship until the FFL is received.

Looking for other calibers? Explore the Moriarti AR-9 Glock-Compatible Pistols or check out our full line of AR-380 Upper Assemblies.

The series were designed and created in loving memory of the owners dog, a frech bulldog rescue - Katerina.