Angstadt Arms UDP-9i Integrally Suppressed Complete Upper

1 in stock


The UDP-9i Integrally suppressed complete upper is designed for AR-15 pistols or receivers registered as a short barreled rifle as the overall length is 11.9″. The UDP-9i integral suppressor features a user configurable adjustable port system, capable of 0-125 FPS in velocity reduction. The integral suppressor is built with an Angstadt Arms UDP-9 upper receiver and can be installed on any 9mm dedicated lower receiver; Glock or Colt style. Each configuration comes complete with Angstadt 9mm bolt carrier group, charging handle and an ODIN Works free float rail.


  • 11.9″ OAL Barrel Length, 6″ Barrel, 5.9″ Baffle Core
  • Titanium Sleeve, 17-4 Stainless Baffle
  • Full Auto Rated
  • User serviceable suppressor
  • Vented Blast Chamber to eliminate first round pop
  • Can be installed on any 9mm dedicated lower receiver – Glock or Colt
  • 7075-T6 Billet Angstadt Upper Receiver
  • ODIN Works 9.5″ MLOK hand rail


Additional Information
Manufacturer Angstadt Arms
Model UDP-9i
Type Integrally Suppressed Upper Receiver
Caliber 9mm
Weight 10.5 oz
Barrel & Suppressor Length 6″ Barrel; 5.9″ Baffle Core
Overall Length 11.9″
Diameter 1.5″
Materials Titanium Sleeve, 17-4 Stainless Baffle
Hand Rail ODIN Works 9.5″ Keymod Hand Rail
Product SKU UDP-9i

Additional Information Content

Additional information

CZ Handguard Color

Battleship Grey, Black, FDE

Modern Warriors

We started Modern Warriors for the sole purpose of providing a less expensive way to enjoy our love of buying and shooting some really cool stuff. What started as a hobby has turned into a business where we have developed the experience and ability to help you enjoy our same hobby and save you money in the process.

We specialize in tactical weapons, including suppressors, short barrel rifles and full auto weapons. We have routine experience in shooting the weapons we carry, so if you want our opinion on how a weapon operates, we will gladly provide it. We also have expertise working with licensed professionals in setting up gun trusts, which is an ideal way of purchasing, owning and operating any weapon restricted by the National Firearm Act. Don’t let the word “trust” scare you. It is very easy to set one up if you have the right help.

Learn More