The Angstadt Arms 0940 UDP is a complete 9mm AR-15 upper (brand part no. AAUT109006) built around a compact 6-inch barrel and finished suppressor-ready for shooters running a 9mm pistol-caliber carbine short. Angstadt Arms designed this upper specifically for the 9mm blowback platform, not a rechambered rifle-caliber upper, so the barrel, bolt, and gas system are matched from the factory. This upper is a drop-in swap onto any mil-spec AR-15 lower for a fast, easy way to build out a compact 9mm PCC. It suits home-defense carbines, range guns, and suppressor hosts alike.

Key Specifications

• The barrel measures a compact 6 inches, ideal for a short-and-maneuverable 9mm pistol-caliber build.
• It is chambered in 9mm Luger, matched to the upper’s dedicated blowback bolt and buffer system.
• Rifling twist is 1:10 inches, a rate suited to standard-weight 9mm bullets.
• The complete upper weighs approximately 3.1 pounds, keeping the overall build light and easy to maneuver.
• The muzzle is finished suppressor-ready, so it accepts a direct-thread or QD-mount can without extra gunsmithing.

Frequently Asked Questions

Is this a complete upper? Yes, it is a fully assembled 9mm upper ready to drop onto a compatible AR-15 lower.

What caliber is it chambered in? 9mm Luger.

Can I mount a suppressor on it? Yes, the muzzle is threaded suppressor-ready for a direct-thread or QD-mount can.

Buy the Angstadt Arms 0940 UDP 9mm 6-Inch Suppressor-Ready Upper

Order the Angstadt Arms 0940 UDP upper from Angstadt Arms through our AR-15 uppers selection and build out a compact 9mm carbine. Our Lubbock, Texas team ships it direct and fully insured as soon as it’s ready to go.