Lead & Steel AR9 9mm 11.3" 1:10 Twist 1/2x36 Nitride Barrel

The Lead & Steel AR9 barrel is a purpose-built 9mm Luger chambering designed for AR-9 pistol caliber carbines and 9mm PCC builds. Cut from 4150 Chrome Moly Vanadium Steel and finished in a QPQ Black Nitride coating, this barrel delivers the durability, surface hardness, and corrosion resistance needed for high-round-count 9mm shooting.

At 11.3 inches, this barrel provides a versatile mid-length configuration well suited to a range of AR-9 upper builds. It features a 1:10 twist rate, optimized to stabilize the full range of 9mm bullet weights from light varmint loads through heavier subsonic projectiles.

The barrel is threaded 1/2x36 for compatibility with common 9mm muzzle devices, allowing easy installation of compensators, blast shields, or thread protectors. Engineered as a direct-fit component for the AR-9 platform, this barrel is a clean drop-in option for completing or upgrading a 9mm AR-9 upper assembly.