Battle Arms Development Lightweight 5.25" 9mm Barrel – 1:10 Twist, 1/2x28 Thread

The Battle Arms Development Lightweight 5.25" barrel is engineered for AR-9 pistol and SBR builds where every ounce matters. The reduced profile shaves weight without sacrificing accuracy or durability, making it ideal for competition shooters and those building compact, maneuverable pistol-caliber carbines. The 1:10 twist rate stabilizes common 9mm loads from 115gr to 147gr reliably.

Machined from 4150 chrome moly vanadium steel with a black nitride finish for corrosion resistance and ease of cleaning. Features 1/2x28 threading at the muzzle for direct attachment of muzzle devices, flash cans, or suppressors. Compatible with standard AR-9 upper receivers and bolt carrier groups. Installation requires basic AR platform familiarity and proper headspacing verification with your bolt.

• Type: Lightweight Profile Barrel
• Caliber: 9mm
• Length:5.25"
• Twist Rate: 1:10"
• Thread Pitch: 1/2x28
• Material: 4150 Chrome Moly Vanadium Steel
• Finish: Black Nitride
• Compatible Firearms: AR-9 Pistols, AR-9 SBRs (NFA rules apply for barrels under 16" on rifles)