Ballistic Advantage 5.5" 9mm Modern Series Barrel - BABL9MM001M

Ballistic Advantage 5.5″ 9mm Modern Series Barrel

Compact 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 1/2×28 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 1/2×28 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 1/2×28 x .400 for muzzle devices or suppressors
• Compatible with Colt/RR and Glock mag setups
• Made in the USA

Specifications

• Caliber: 9mm
• Length: 5.5″
• Profile: Straight
• Twist Rate: 1:10
• Gas System: Blowback (no gas block)
• Gas Block Journal: N/A
• Muzzle Thread: 1/2×28
• Material: 4150 CMV Steel
• Finish: QPQ / Black Nitride
• Weight: 9.6 oz
• Platform: AR-15 (Pistol Caliber)