Battle Arms Development Lightweight 8.5" 9mm Barrel – AR-9 Platform

The Battle Arms Development Lightweight 8.5" barrel delivers reliable 9mm performance in a compact AR-9 pistol or SBR configuration. Engineered for reduced weight without sacrificing accuracy, this barrel is ideal for home defense, competitive shooting, or range work where maneuverability matters. The 8.5" length provides optimal velocity from pistol-caliber ammunition while maintaining a manageable overall weapon length.

Manufactured from quality steel with a black nitride finish for corrosion resistance and reduced friction. The 1:10 twist rate stabilizes common 9mm projectile weights from 115 to 147 grains. Compatible with standard AR-9 upper receivers using Glock-style magazine conversions or dedicated 9mm lowers. Note: Building an AR pistol with a barrel under 16" requires compliance with federal firearms laws; configurations under 26" overall length may be subject to NFA regulations.

• Type: Rifle Barrel
• Caliber: 9mm Luger
• Length: 8.5 inches
• Twist Rate: 1:10
• Material: Steel
• Finish: Black Nitride
• Compatible Firearms: AR-9 Platform (Glock-mag compatible uppers/lowers)