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Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly Caliber: 9mm Luger, Overall Length: 14 in, w/ Free S&H

Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906
Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906
Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906
Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906
Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906
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Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906
Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906
2 of 4 images
Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906
Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906
3 of 4 images
Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906
Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906
4 of 4 images
Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906

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Questions & Answers
Can I put this on any standard ar 15 lower?

Yes it will fit on a standard AR15 lower, but it is a 9mm so of course you will need some sort of adapter for the lower to be compatible with 9mm ammunition. They sell mag well convertor inserts or even PMag follow adapters for 9mm. Or you can buy a designated AR9 lower.

by Mw826, Verified Owner, March 31, 2021
See 4 More Answers
Will this accept Colt 9mm mags?

It only accepts Glock mags.

by Greg, Verified Owner, April 23, 2021
View All Q&A You Have a Question? Ask!
Caliber:
9mm Luger
Overall Length:
14 in
Barrel Length:
5.85 in
Muzzle Device:
Flash Hider
Finish:
Matte
Color:
Black
Condition:
Factory DEMO

Code: 3FF-URC-MDP9RU-AAUMDP0906-DEMO

MPN: AAUMDP0906-DEMO

Final Sale
List: $1,655.00Save 18%
$1,349.00

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly

The Angstadt Arms MDP-9 Complete upper is an ultra-compact upgrade for your personal defense weapon, built for the modern age. With a proven roller-delayed action and AR-15 platform compatibility, the MDP-9 Complete uppers delivers the ideal weapon system for both professionals and prepared citizens alike. The MDP-9 is chambered in 9mm and compatible with most Mil-Spec AR-9 lower receivers.image

Specifications for Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly:

Manufacturer: Angstadt Arms
Caliber: 9mm Luger
Overall Length: 14 in
Barrel Length: 5.85 in
Muzzle Device: Flash Hider
Finish: Matte
Color: Black
Weight: 3.7 lb
Magazine Included: No
Condition: Factory DEMO
Mount Type: Picatinny
Attachment Type: Picatinny

Features of Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly

  • Proven reliability - Operates on a patent pending roller-delayed action
  • Extremely lightweight - less than 3.7lbs
  • Ultra-compact - Just 14"
  • 5.85" MP5 profile barrel with 3-lug
  • Includes a 1913 picatinny end plate that accepts a wide variety of stabilizing braces and rifle stocks
  • Non-reciprocating forward charging handle that can be swapped from left to right side
  • Works with most last round bolt hold open features utilizing a Mil-spec bolt catch

Package Contents:

  • Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly

Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly Orderable Models

List of Orderable Models

  • DEMO, Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906 , MPN: AAUMDP0906-DEMO , Code: 3FF-URC-MDP9RU-AAUMDP0906-DEMO

Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly Unavailable & Discontinued Models

List of Unorderable Models

  • Angstadt Arms MDP-9 6in Complete Roller Delay Upper Receiver Assembly - Surpressor Ready, Black, 9mm, AAUMDP0906 , MPN: AAUMDP0906 , UPC: 853427007691 , Code: 3FF-URC-MDP9RU-AAUMDP0906
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Last updated 2026-09-20 UTC.