This Lead & Steel barrel (brand part number LS9MM4.5-36) is a short AR9 9mm barrel finished in black nitride and threaded 1/2×36 for compact pistol-caliber builds.

Key Specifications

• Chambered in 9mm.
• 5.50-inch overall barrel length (per manufacturer spec).
• Threaded 1/2×36.
• Finished in black nitride.
• Built for AR9 pistol-caliber platforms.

Frequently Asked Questions

What thread pitch does this barrel use?
It’s threaded 1/2×36.

What finish is on this barrel?
A black nitride finish for corrosion resistance.

Buy the Lead & Steel AR9 9mm Short Barrel

Keep your AR9 pistol build compact with this short nitride barrel. Ships fast from a Lubbock, TX gun shop, part of our Lead & Steel lineup in our AR barrels selection.