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Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver Up to 18% Off and Blazin' Deal w/ Free S&H — 5 models

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47833
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47833
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47833
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
1 of 11 images
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47833
2 of 11 images
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47833
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
3 of 11 images
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
4 of 11 images
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
5 of 11 images
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
6 of 11 images
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
7 of 11 images
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47833
8 of 11 images
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47833
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47833
9 of 11 images
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47833
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
10 of 11 images
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834
11 of 11 images
Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834

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Questions & Answers
Does it Come with CHARGING HANDLE?? Expert Answer

The Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver comes with a BCG but not a charging handle.

by Hunter, Gear Expert, December 27, 2021
See 2 More Answers
Does this ship with a buffer and spring? If so, what buffer weight? Expert Answer

No, this will not come with the buffer weight and spring.

by Patrick, Gear Expert, November 5, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Maxim PDX Upper by Chris, April 26, 2021
The 300 blackout version functions great! Eats subsonic and supers with no issue, or modification, it just works. Got a Eotech zeroed to 25, it is spot on. The handguard didn’t heat up as I anticipated, but could if you run a bunch of mags back to ba...
Read More...
1/2 found this helpful
Helpful Positive Review
The best purchase I've made in a long time! by Jay, Verified Owner, December 2, 2020
This is the second one I've bought this month so that says something! These little guys are for sure worth every penny! Great fitment, great looks and great price! I cant wait to get my hands on the 3000 Blackout when it comes available!
2/2 found this helpful
Helpful Positive Review
Maxim PDX 556 Upper Black by Roger, March 30, 2022
Great system. I love the fact that this Maxim PDX upper works with my non-PDW equipped AR lowers. Something my Q Honey Badger upper can never do. It’s nicely universal in that respect. The upper functions smoothly suppressed and un suppressed. Cyclin...
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1/1 found this helpful
Most Recent Reviews
AR project by Hugi, Verified Owner, June 13, 2025
I have always look and admire Maxim defense for suck good function designs and now I building my own. And also aptics planet for the awesome deals
Read All 4 Reviews

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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.

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Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver

Product Info for Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiverimage

The NEW Maxim Defense PDXU.R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec lower receiver. With the PDX U.R.G, you dominate close quarter encounters and achieve maximum energy on target without sacrificing accuracy at distance. At just 14 in overall length and a 5.5 barrel, the PDXU.R.G. is the ultimate choice for when concealment and personal defense is non-negotiable. The PDXU.R.G. is also equipped with newly invented Maxim HATEBRAKEMuzzle Booster. This patent-pending device significantly reduces recoil, decreases the flash signature, pushes gasses and concussion waves downrange away from the operator improving overall execution in short barrel pistols and rifles. The PDX U.R.G. uses a Direct Impingement system. Ships with a PDX/SCW compatible bolt carrier group.

Specifications for Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver:

Manufacturer: Maxim Defense Industries
Overall Length: 14 in
Barrel Length: 5.5 in
Handguard Type: Free-Float
Muzzle Device: Hatebrake
Finish: Type III Hardcoat Anodized
Fabric/Material: 6AL-4V Titanium, 6061 Aluminum, 7075 Aluminum, 17-4 Stainless Steel
Gun Rail: Picatinny
Gun Type: Rifle
Gun Model: AR-15
Weight: 4 lb
Magazine Included: No
Condition: New
Additional Features: PDX/SCW Compatible
Country of Origin: USA

Package Contents:

  • Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver
  • Package Contents:
  • Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver
  • HATEBRAKE installed under handguard
  • M-slot compatible handguard
  • Military grade materials 6Al-4V Titanium 17-4 Stainless Steel 7075 and 6061 Aluminum
  • HK height rail for a more rigid upper receiver
  • Maxim PDX/SCW compatible BCG

What firearm models does the manufacturer say Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver is compatible with?

The manufacturer suggests that Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver is compatible with AR-15

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver Orderable Models

List of Orderable Models

  • Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Arid Earth, MXM-47834 , MPN: MXM-47834 , UPC: 680017478346 , Code: MDI-URC-CCBX-MXM-47834
  • Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 300 BLK NATO, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47836 , MPN: MXM-47836 , UPC: 680017478360 , Code: MDI-URC-CCBX-MXM-47836
  • Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Black, MXM-47835 , MPN: MXM-47835 , UPC: 680017478353 , Code: MDI-URC-CCBX-MXM-47835
  • Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 300 BLK NATO, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47837 , MPN: MXM-47837 , UPC: 680017478377 , Code: MDI-URC-CCBX-MXM-47837
  • Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47833 , MPN: MXM-47833 , UPC: 680017478339 , Code: MDI-URC-CCBX-MXM-47833

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Black, MXM-47835 , MPN: MXM-47835-DEMO , Code: MDI-URC-CCBX-MXM-47835-DEMO
  • DEMO, Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47832 , MPN: MXM-47832-DEMO , Code: MDI-URC-CCBX-MXM-47832-DEMO
  • DEMO, Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 300 BLK NATO, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47836 , MPN: MXM-47836-DEMO , Code: MDI-URC-CCBX-MXM-47836-DEMO
  • Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47832 , MPN: MXM-47832 , UPC: 680017478322 , Code: MDI-URC-CCBX-MXM-47832
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Last updated 2026-11-10 UTC.