AR-380 10.5" Barrel – 1:16 Twist – 4150V Black Nitride | Moriarti Arms

Barrels

AR-380 10.5" Barrel 1:16 Twist, 4150V, Black Nitride, Blowback | Moriarti Arms

Build your AR-380 pistol right with the Moriarti Arms 10.5" AR-380 Auto Barrel, engineered for reliable blowback performance and precision shooting.

This barrel is made from 4150V gun-quality steel, stress-relieved and finished in black nitride for excellent corrosion resistance and longevity. A 1:16 twist rate ensures stability for .380 Auto rounds, while the medium profile balances rigidity and weight.

Featuring 5/8x24 muzzle threads, it's suppressor- and muzzle device-ready, perfect for custom builds. Compatible with standard blowback AR-15 pistol caliber platforms.

Barrel Specifications:

• Caliber: .380 Auto

• Length: 10.5"

• Twist Rate: 1:16

• Profile: Medium

• Gas System: Blowback (no gas block required)

• Material: 4150V Gun-Quality Steel

• Muzzle Threads: 5/8x24 TPI

• Finish: Black Nitride

• Compatibility: AR-15 Pistol Caliber Carbine Platforms

• Made in the USA

Looking to complete your build? Pair with our Glock-Style AR-9 Lowers for full compatibility.