Upgrade your 9mm pistol build with this 3-inch, 5/8-24 threaded AR15/AR9 barrel from Mid State Firearms. This uncoated barrel works great with a suppressor.

Get your 9mm Ar-15 build, Ar-9, whatever you want to call it, started off right with this shorty pistol ar9 barrel. Threaded 5/8-24. Most factory 9mm ammo will stay subsonic with just a 3″ barrel, so this is a great option for running with a suppressor as well.

For your 3″ Ar 9mm pistol build, works great with a suppressor. Most 9mm rounds won’t reach supersonic velocity with only 3″ of barrel length, so you can stay subsonic even with regular factory ammo.

Palmetto State Armory has a selection of complete 9mm carbine rifles and pistols (aka AR-9) for your next training day on the range or competition. Choose from a variety of barrel lengths, furniture configurations, and more to find the right gun for you.

We carry multiple AR 9mm barrel lengths, bringing you options from top brands. Explore our options below and start sourcing parts for your 9mm AR build now. First responder discount available. 30-day hassle free returns with no restocking fee. Same day shipping when order is placed before 1PM EST.

3″ 9MM AR-15 Barrel (1/2×28) Product Specs: Chambered in 9mm Luger; 1-10 twist rate; 4150 Steel; Nitride finish; 1/2 x 28 thread pitch; 3” overall length **Ensure your muzzle device has a bore large enough for 9mm projectiles!**

The Foxtrot Mike Products 3" 9MM AR-15 Upper Receiver Group is built from the ground up to provide outstanding reliability and accuracy with a host of top tier features. The feature rich Foxtrot Mike Products FM-9 upper receiver offers a cutting edge design with a monolithic style.