5.5-inch AR-15 10MM Direct Blowback Barrel, 1:16 Twist, 5/8x24 Threaded, Black Nitride

AR-15 5.5-inch 10mm Direct Blowback Barrel, 1:16 Twist, 5/8x24 Threaded, Black Nitride

The AR-15 5.5-inch 10mm direct blowback barrel is a precision machined PCC profile steel barrel with a black nitride finish, a 1:16 twist rate, and a 5/8x24 threaded muzzle. Compatible with 5/8x24 threaded muzzle devices. Designed for 10mm direct blowback AR-15 pattern pistol caliber carbine builds across range, competition, and defensive PCC applications.

Key Features

• 5.5-inch 10mm Auto barrel, precision machined PCC profile steel, black nitride finish
• 1:16 twist rate
• 5/8x24 threaded muzzle
• Direct blowback platform
• Compatible with 5/8x24 threaded muzzle devices
• Enhanced corrosion resistance through black nitride treatment
• Nitride hardened wear-resistant surface
• AR-15 pattern 10mm PCC platform compatible
• Range, competition, and defensive PCC build application

Perfect For

• AR-15 PCC builders sourcing a 5.5-inch 10mm direct blowback barrel in black nitride with a 5/8x24 threaded muzzle for range, competition, or defensive pistol caliber carbine builds
• Shooters building a compact 10mm AR-15 pattern direct blowback platform who want a PCC profile black nitride barrel with a 5/8x24 thread pitch for threaded muzzle device compatibility
• AR-15 PCC builds requiring a precision machined 10mm direct blowback barrel with a nitride hardened surface for wear and corrosion resistance without sourcing additional finishing

Construction and Compatibility

The 5.5-inch barrel is chambered in 10mm Auto and precision machined from steel in a PCC profile with a black nitride finish. Black nitride diffuses nitrogen into the steel surface under heat to produce a hard, corrosion-resistant layer that is part of the steel itself rather than a coating sitting on top of it, providing enhanced wear resistance across the barrel exterior. The twist rate is 1:16 and the 5/8x24 threaded muzzle accepts compatible threaded muzzle devices at the 5/8x24 thread pitch. The barrel is designed for 10mm direct blowback AR-15 pattern pistol caliber carbine platforms across range, competition, and defensive PCC applications.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Verify compatibility with your specific AR-15 pattern 10mm upper receiver and bolt carrier group before use. Verify local and state laws regarding threaded barrels before purchasing.