Angstadt Arms UDP-9 Complete Upper – 9mm, 6 Barrel, Threaded, Includes 9mm BCG & Charging Handle, Black Finish

Ready to build the ultimate compact 9mm PCC? The Angstadt Arms UDP-9 Complete Upper delivers top-tier performance in a lightweight, ultra-reliable platform. Designed for pistol-caliber AR-15 builds, this upper comes fully assembled with a 6″ threaded barrel, a dedicated 9mm bolt carrier group (BCG), and a mil-spec charging handle — making it plug-and-play for your next AR9 pistol or SBR build.

Angstadt Arms complete upper receiver pistol assembly is ready to run out of the box with any 9mm AR-15 lower receiver. Featuring the same high quality parts that go into their UDP-9 pistol, this completed upper receiver is compatible with both GLOCK(R) and COLT(R) style 9mm magazines. Complete 9mm upper receiver pistol assembly with 6″ barrel and 5.5″ hand guard. Ready to run with any 9mm AR-15 dedicated lower receiver.

Precision-machined and finished in sleek black anodizing, this upper pairs perfectly with Glock-mag compatible 9mm lowers.

⚙️ Key Features:

• Caliber: 9mm Luger

• Barrel Length: 6″ – Compact and maneuverable, ideal for CQB or range fun

• Barrel Type: Threaded (1/2×28) – Suppressor and muzzle device ready

• Upper Receiver: 7075-T6 Aluminum, Black Hardcoat Anodized

• Includes:
  • 9mm Bolt Carrier Group (BCG)
  • Charging Handle

• Handguard: Slim free-float M-LOK (if applicable — confirm style if needed)

• Compatibility: Works with Glock-mag 9mm lowers (like Angstadt, PSA, New Frontier, etc.)

• Non-Reciprocating Charging

• Made in the USA

Whether you’re building a suppressed PDW, a fast-action competition PCC, or a compact home defense gun — the UDP-9 upper brings style and precision to the table.

FAQ:

Q: Is this upper compatible with my standard AR-15 lower?
A: No — it must be used with a dedicated 9mm Glock-mag compatible lower, such as those from Angstadt Arms, PSA, or Foxtrot Mike.

Q: Is this upper ready to fire out of the box?
A: Yes — it includes the 9mm bolt carrier group and charging handle, and it’s ready to mount on a compatible lower.

Q: Can I use a suppressor with this upper?
A: Absolutely — the barrel is threaded 1/2×28, which is compatible with most 9mm muzzle devices and suppressors.

Also Available:

Radian Model 1 Complete AR-15 Upper – 10.5″ .223 Wylde Threaded Barrel, Black Cerakote, M-LOK, Includes BCG & Raptor Charging Handle

Del-Ton Complete AR-15 Upper Receiver – .223/5.56 NATO, 16″ Heavy Barrel, Flat Top, A2 Flash Hider, Mil-Spec Forged Upper