5.5" 1:10 TWIST 9MM BARREL - BLACK NITRIDE

Upgrade your subcompact AR-9 build with the Always Armed 5.5" 9mm Black Nitride Barrel. Proudly Made in the USA, this compact barrel is precision-engineered for pistol-caliber carbines and AR-9 pistol configurations where reliable function and maximum maneuverability are critical.

Crafted from high-strength 4150 Chromoly Steel, this barrel features a sturdy Light HBAR Profile that offers an optimal balance of structural rigidity, effective heat management, and front-end weight reduction. The ultra-durable Black Nitride finish provides enhanced surface hardness, friction reduction, and long-lasting protection against corrosion and wear.

Chambered in 9x19mm Parabellum, the precision 1:10 right-hand twist rate delivers exceptional stabilization for a wide variety of 9mm factory loads, ensuring accurate performance with standard target and defensive ammo alike. Cut with a classic 1/2x36 TPI thread pattern, it ensures safe muzzle device pairing by preventing accidental cross-threading with standard 5.56 devices and providing seamless fitment for 9mm flash hiders, compensators, or suppressors.

Technical Specifications

• Brand: Always Armed
• Caliber: 9x19mm Parabellum
• Length: 5.5 Inches
• Material: 4150 Chromoly Steel
• Profile: Light HBAR
• Finish: Black Nitride
• Twist Rate: 1:10
• Thread Pattern: 1/2x36 TPI
• Origin: Made in the USA
• Platform: AR-9 / AR-15 9mm Uppers