+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit Up to 12% Off w/ Free S&H — 6 models

Special offer available for this product. Click here to see!
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
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
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
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
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
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
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
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
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
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
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
1 of 10 images
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
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
2 of 10 images
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
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
3 of 10 images
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
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
4 of 10 images
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
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
5 of 10 images
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
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
6 of 10 images
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
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
7 of 10 images
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
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
8 of 10 images
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
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
9 of 10 images
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
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
10 of 10 images
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

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
You May Also Like
Best Rated Magpul Industries PMAG GEN M3 AR-15 Rifle Magazine, .300 Blackout, 30 Round, Black, 1 Pack, Polymer, MAG800-BLK-30RD
Magpul Industries PMAG GEN M3 AR-15 Rifle Magazine, .300 Blackout, 30 Round, Black, 1 Pack, Polymer, MAG800-BLK-30RD
(33)
List: $31.99 $15.99 Save Up to 50%
Best Rated Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI571BLK-30RD
Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI571BLK-30RD
(47)
List: $24.99 $12.99 Save Up to 48%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI556BLK-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI556BLK-30RD
(44)
List: $32.43 $17.99 Save Up to 45%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI557BLK-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI557BLK-30RD
(28)
List: $27.99 $14.99 Save Up to 46%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Coyote Tan, 1 Pack, Polymer, MAG557-MCT-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Coyote Tan, 1 Pack, Polymer, MAG557-MCT-30RD
(28)
List: $24.95 $14.99 Save Up to 40%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD
(19)
List: $30.79 $21.49 Save Up to 30%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Coyote Tan, 1 Pack, Polymer, MAG556-MCT-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Coyote Tan, 1 Pack, Polymer, MAG556-MCT-30RD
(44)
List: $32.43 $17.99 Save Up to 45%
Best Rated Magpul Industries PMAG GEN M3 AR-15 Rifle Magazine, .300 Blackout, 20 Round, Black, 1 Pack, Polymer, MAG1182-BLK-20RD
Magpul Industries PMAG GEN M3 AR-15 Rifle Magazine, .300 Blackout, 20 Round, Black, 1 Pack, Polymer, MAG1182-BLK-20RD
(12)
List: $31.06 $22.99 Save Up to 26%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Remington, 40 Round, Black, 1 Pack, Polymer, MGMPI233BLK-40RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Remington, 40 Round, Black, 1 Pack, Polymer, MGMPI233BLK-40RD
(10)
List: $41.46 $29.99 Save Up to 28%
Best Rated Strike Industries Rifle Magazine, AR-15, .223 Remington/5.56 NATO, 33 Round, Smoke Gray, 1 Pack, Polymer, SI-AR-MAG-33RD
Strike Industries Rifle Magazine, AR-15, .223 Remington/5.56 NATO, 33 Round, Smoke Gray, 1 Pack, Polymer, SI-AR-MAG-33RD
(10)
List: $26.99 $17.99 Save Up to 33%
Questions & Answers
This product shows a picture of a reptilia ar grip. Is the reptilia ar grip included? because the product package contents do not state that it does. Expert Answer

No, it will not include the handstop.

by Armando R., Gear Expert, December 12, 2020
See 2 More 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
View All Q&A You Have a Question? Ask!
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...
Read More...
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...
Read More...
1/1 found this helpful
Helpful Positive Review
Pricey but top quality (5.56 with 5.5 inch barrel FDE color) by rgnot3, December 4, 2021
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...
Read More...
1/2 found this helpful
Helpful Positive Review
Maxim defense pdx absolutely cool piece by Cactus Daddy 623, Verified Owner, August 4, 2021
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) ...
Read More...
3/3 found this helpful
Most Recent Reviews
A pocket rocket by REDACTED, January 17, 2026
I picked up this Maxim Industries PDX kit after watching a review from Short Shot Tony on YouTube about the now discontinued Springfield armory PDW Saint. That Saint was made with the Maxim Industries PDX kit, and after trying to find one, I decided ...
Read More...
Read All 8 Reviews
Show In Stock Only
6 Models Available
Caliber
All
Color
All
Threads per Inch
All
Search
Click to select this item for your bundle offer!

Buy Together and Save

As low as $1,624.49
You Save Up to 11%
OP Bucks$32.31

made-in-usa-flag Made in USA

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 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.

What firearm models does the manufacturer say Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit is compatible with?

The manufacturer says that Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit is compatible with AR-15

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, 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, 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, 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, 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, Black, MXM-47815 , MPN: MXM-47815 , UPC: 680017478155 , Code: MDI-URC-GHGFKIT-MXM-47815
Compare (0)
1 item has been added
Add at least two items to compare