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Questions & Answers
does it come with a trigger for the lower or do I need to get one. I'd so what is recommended. Expert Answer

You would need to get a trigger separately as well as a majority of the lower receiver and its parts. The trigger recommendation is dependent on your budget and what features you want. Please email us at techsales@opticsplanet.com with a price range and any preferences and we can look into trigger options.

by Armando R., Gear Expert, December 12, 2020
Customer Reviews
Helpful Positive Review
Everyone needs at least one of these! by Jay, Verified Owner, November 11, 2020
This little setup is absolutely awesome! Excellent quality and super easy to put together! I picked up the 5.56 version and now going to grab the 7.62 also. As my title for this review says... I believe everyone should own at least one!
6/7 found this helpful
Helpful Positive Review
Maxim Defense upper kit by Ben, January 8, 2022
Great quality product. Very robust. Love that it comes with a grip and legit Radian LT charging handle. I used a radian lower also in FDE and it looks perfect. Only minor complaint is the stock slide when fully collapsed interferes with the bolt cat...
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3/3 found this helpful
Helpful Positive Review
Great piece of hardware by Jake, Verified Owner, October 7, 2022
Instant fun gun. Solid piece of equipment comes with everything shown. If your not sure and your reading this BUY it!!!!!! It fits in a Regular Sport back pack very solid and great finish. I run Romeo 4s red dot on top of these platforms perfect heig...
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1/1 found this helpful
Helpful Positive Review
The quality cannot be overstated. There's nothing I don't like about this product except the fact that its expensive, but you really do get what you pay for. I bought this kit to mate it with a Sharps Brothers lower and a rise armament trigger and Si...
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1/2 found this helpful
Helpful Positive Review
I walked into this skeptical I am here writing my review after using it for quite a while now. I had got this in March of 2020. It has been absolutely 100% reliable I only cleaned it today Aug 3 2021 after maybe close to 2,000 rounds. (give or take) ...
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3/3 found this helpful
Most Recent Reviews
PDD for win by Roly, Verified Owner, October 30, 2024
This is just an incredible rifle…I would definitely recommend this to anyone looking for something unique
0/1 found this helpful
Read All 7 Reviews
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Product Info for Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit

The Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit The buffer system/bolt assembly allows this AR pistol to be 18.75 inches with the stock collapsed. These AR15 Upper Receivers are a cut above what you get anywhere else. The Maxim SCW system of the PDX Brace Upper Kit cuts down the stock length to 4″. Interchangeable buffer weights give you maximum performance and versatility without sacrificing form and functionality. If you're looking for a quality build for your AR15, you want to get the Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit.image

Specifications for Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit:

Manufacturer: Maxim Defense Industries
Overall Length: 14 in
Gun Type: Rifle
Barrel Length: 5.5 in
Weight: 5 lb
Handguard Type: Free-Float
Stock/Brace Material: 6AL-4V Titanium, 6061 Aluminum, 7075 Aluminum, 17-4 Stainless Steel
Muzzle Device: Hatebrake
Finish: Type III Hardcoat Anodized
Additional Features: PDX/SCW Compatible
Gun Rail: Picatinny
Gun Make: AR Platform
Gun Model: AR-15
Magazine Included: No
Country of Origin: USA

Features of Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit

FEATURES:

HATEBRAKE installed under the handguard

M-slot compatible handguard

Military grade materials 6Al-4V Titanium, 17-4 Stainless Steel, 7075 and 6061 Aluminum

SCW Buffer-carrier

HK height rail for a more rigid upper receiver

Military tested Rapid Deploying PDW stock

FUNCTIONS:

Optimized Personal Defense Weapon kit

Increased reliability due to included HATEBRAKE

Optimized low flash

Designed to be installed on any Mil-Spec lower receiver

Package Contents:

  • Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit
  • Package Contents:
  • Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit
  • HATEBRAKE installed under handguard 1-2 MOA accurate
  • M-slot compatible handguard Military grade materials 6Al-4V Titanium 17-4 Stainless Steel 7075 and 6061 Aluminum SCW Buffer-carrier HK height rail for a more rigid upper receiver Military tested Rapid Deploying PDW brace.

Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit Orderable Models

List of Orderable Models

  • Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit, 5.56 NATO, 14in, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Type III Hardcoat Anodized, Arid Earth, MXM-47816 , MPN: MXM-47816 , UPC: 680017478162 , Code: MDI-URC-GHGFKIT-MXM-47816
  • Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit, 300 BLK, 14in, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Type III Hardcoat Anodized, Arid Earth, MXM-47828 , MPN: MXM-47828 , UPC: 680017478285 , Code: MDI-URC-GHGFKIT-MXM-47828
  • Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit, 300 BLK, 14in, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Type III Hardcoat Anodized, Black, MXM-47829 , MPN: MXM-47829 , UPC: 680017478292 , Code: MDI-URC-GHGFKIT-MXM-47829
  • Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit, 5.56 NATO, 14in, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Type III Hardcoat Anodized, Black, MXM-47817 , MPN: MXM-47817 , UPC: 680017478179 , Code: MDI-URC-GHGFKIT-MXM-47817
  • Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit, 7.62x39, 14in, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Type III Hardcoat Anodized, Arid Earth, MXM-47814 , MPN: MXM-47814 , UPC: 680017478148 , Code: MDI-URC-GHGFKIT-MXM-47814
  • Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit, 7.62x39, 14in, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Type III Hardcoat Anodized, Black, MXM-47815 , MPN: MXM-47815 , UPC: 680017478155 , Code: MDI-URC-GHGFKIT-MXM-47815
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