Lead & Steel AR9 9mm Luger 5.5" 1:10 Twist 1/2x28 Black Nitride CMV Straight Profile Barrel

The Lead & Steel AR9 barrel is a compact 5.5" straight-profile replacement built for the AR-9 pistol-caliber carbine platform. Chambered in 9mm Luger, it is precision-machined from chrome moly vanadium (CMV) steel and finished in black nitride for excellent wear and corrosion resistance. The bore is cut with a 1:10 rifling twist well matched to common supersonic and subsonic 9mm projectile weights, and the muzzle is threaded 1/2x28 for use with standard 9mm muzzle devices and pistol-caliber suppressors. Its short length and straight profile make it an ideal choice for compact PCC builds where maneuverability and a tight footprint matter most.