6" 1:7 Twist .300 Blackout Barrel - Black Nitride

Meta Title 6" .300 Blackout AR-15 Barrel - Black Nitride | Always Armed

Meta Description Build a ultra-compact CQB firearm with the Always Armed 6" .300 Blackout barrel. Features 4150 chromoly steel, 1:7 twist, pistol gas system, and 5/8x24 threads.

URL Slug 6-inch-300-blackout-ar15-barrel-black-nitride

Meta Keywords 6 inch 300 blackout barrel, 300 blackout micro barrel, 6 inch ar15 barrel 300 blackout, black nitride 300 blackout barrel, 1 7 twist 300 blackout, pistol length gas 300 blackout, 5/8x24 300 blackout barrel

Image Alt Text Always Armed 6 inch AR-15 .300 Blackout barrel in Black Nitride finished 4150 chromoly steel featuring pistol length gas system, M4 feed ramps, and 5/8x24 threads

Optimized Product Description

Build an elite ultra-compact PDW or suppressor host with the Always Armed 6" .300 Blackout Black Nitride Barrel. Proudly Made in the USA, this micro-length barrel is purpose-built to deliver extreme maneuverability in close-quarters environments without sacrificing terminal performance or reliability.

Machined from high-strength 4150 Chromoly Steel, this barrel incorporates a sturdy Light HBAR Profile for effective heat control and rigid performance. It is treated with a protective Black Nitride finish that creates an ultra-hard, corrosion-resistant surface inside the bore and on the exterior. Cut with smooth M4 feed ramps for dependable feeding, it also features authentic caliber markings laser-engraved near the muzzle break for quick identification.

Engineered around a reliable pistol-length gas system and a standard .750" gas platform, it delivers consistent gas drive for smooth cycling. The fast 1:7 right-hand twist rate is precision-tuned to properly stabilize heavy subsonic loads and high-velocity supersonic projectiles alike—making it an ideal setup for running suppressed. The muzzle is threaded in standard 5/8x24 TPI, allowing seamless installation of your choice of .30 caliber suppressors, muzzle brakes, or flash hiders.

Technical Specifications

• Brand: Always Armed
• Caliber: .300 AAC Blackout
• Length: 6 Inches
• Material: 4150 Chromoly Steel
• Finish: Black Nitride
• Profile: Light HBAR
• Twist Rate: 1:7
• Gas System: Pistol-Length
• Gas Block Journal: .750"
• Feed Ramps: M4
• Thread Pattern: 5/8x24 TPI
• Markings: Engraved Near Muzzle Break
• Origin: Made in the USA
• Platform: AR-15 Upper Receivers