Ballistic Advantage 5.5" 9mm Modern Series Barrel

Ballistic Advantage 5.5" 9mm Modern Series BarrelCompact 9mm performance, built for precision and versatility.The Ballistic Advantage 5.5" 9mm Modern Series Barrel is built for compact AR-pattern pistol caliber carbines and SMG-style builds. Machined from durable 4150 Chrome Moly Vanadium steel and finished with a QPQ corrosion-resistant treatment, this barrel delivers long-lasting performance in a small footprint.Designed for blowback-operated AR-15 platforms, this barrel requires no gas block or gas system, making it simple and reliable. The 1:10 twist rate stabilizes a wide range of 9mm projectiles, while the 1/2x28 threaded muzzle provides compatibility with a variety of muzzle devices and suppressors. With an integrated feed ramp and barrel extension, it's drop-in ready for builds using Colt/RR or Glock-style 9mm lowers, with appropriate magwell adapters or dedicated lowers.Important: Standard 1/2x28 muzzle devices may not have the necessary internal clearance for 9mm rounds. Always confirm alignment before installation.Features 5.5" compact length ideal for AR pistols and PCCs 4150 CMV steel for strength and longevity QPQ black nitride finish for corrosion resistance Blowback-operated - no gas system required Integrated feed ramp and barrel extension Threaded 1/2x28 x .400 for muzzle devices or suppressors Compatible with Colt/RR and Glock mag setups Made in the USASpecifications Caliber: 9mm Length: 5.5" Profile: Straight Twist Rate: 1:10 Gas System: Blowback (no gas block) Gas Block Journal: N/A Muzzle Thread: 1/2x28 Material: 4150 CMV Steel Finish: QPQ / Black Nitride Weight: 9.6 oz Platform: AR-15 (Pistol Caliber)