The Battle Arms Development Lightweight 9mm Barrel (BAD part no. A-BBL5.25T9MM1-10BN) is a 5.25-inch barrel built for 9mm AR-platform pistol builds, cut with a 1-in-10 twist rate and finished in black nitride for corrosion resistance. Battle Arms Development machines its barrels to the same tight tolerances the brand applies across its whole parts lineup, prioritizing durability and reliability alongside precise manufacturing. At 5.25 inches, it’s sized for a compact 9mm AR pistol build rather than a full-length carbine, keeping the platform short and maneuverable. It’s a solid foundation for anyone building a lightweight, reliable 9mm AR pistol from the ground up.

Key Specifications

• Chambered in 9mm.
• Cut to 5.25 inches, sized for a compact AR pistol build.
• Rifled with a 1-in-10 twist rate.
• Finished in black nitride for corrosion resistance.
• Machined to tight tolerances for durability and reliability.

Frequently Asked Questions

What caliber and length is this barrel? 9mm, cut to 5.25 inches, sized for a compact AR pistol build.

What finish does it have? A black nitride finish for corrosion resistance.

Buy the Battle Arms Development Lightweight 9mm Barrel

Order this Battle Arms Development barrel from our AR15 barrels selection and build a compact, reliable 9mm AR pistol. Ships fast from our Lubbock, Texas gun shop.