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
$1,615.50 at OpticsPlanet
In stock Sale
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
Maxim Defense · Upper Receiver
No ratings yetBest price
$1,615.50at OpticsPlanet
Out of stock Sale checked Oct 22, 2026
In stock now instead
- Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit 5.… $1,615.50at OpticsPlanet
- Maxim Defense Industries MDX 510 U.R.G. AR-15 5.56x45mm NATO 10… $1,255.50at MidwayUSA
- DDM4V7 Pro 18" 5.56mm NATO 1-7 15" MFR XS M-LOK Rail Upper $1,611.00at Kentucky Gun Co
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $1,615.50Salechecked Oct 22, 2026 | Out of stock | Buy at OpticsPlanet |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Similar upper receivers in stock
This part is out of stock at every store we track. These similar upper receivers are in stock, with today's prices.
Maxim Defense Industries MDX 510 U.R.G. AR-15 5.56x45mm NATO 10.3 inch Upper Receiver Pistol Length 1-7 Twist 1/2x28 HATEBRAKE Arid
$1,255.50 at MidwayUSA · 2 stores
In stock
DDM4V7 Pro 18" 5.56mm NATO 1-7 15" MFR XS M-LOK Rail Upper
$1,611.00 at Kentucky Gun Co · 6 stores
In stock
Daniel Defense M4A1 14.5 in Barrel 5.56mm NATO Upper Receiver Group
$1,621.00 at MidwayUSA · 3 stores
In stock
Mk16 10.3" Urgi Upper CHF Barrel, Ach, Rebcg 5.56mm DDC
$1,525.00 at MidwayUSA · 4 stores
In stock
Mk12 Mod 0 SPR Gen II 5.56mm 18" Bbl 1-7 Twist Upper FDE
$1,510.45 at MidwayUSA · 3 stores
In stock
Price history
Dashed line = out of stock. Tracking since Oct 15, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $1,615.50 | $1,615.50 | $1,615.50 |
Since Oct 15, 2026.
About this part
The 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 is a 14" 5.56 / .223 upper receiver from Maxim Defense. One store lists it, OpticsPlanet at $1,615.50.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Muzzle thread
- 1/2x28 · Muzzle devices
- Barrel length
- 14" · Handguards
Specifications
- Manufacturer
- Maxim Defense
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
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. 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. Specifications for Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit: Manufacturer: Maxim Defense Industries Gun Type: Rifle Overall Length: 14 in Barrel Length: 5.5 in Weight: 5 lb Stock/Brace Material: 6AL-4V Titanium 17-4 Stainless Steel 6061 Aluminum 7075 Aluminum Handguard Type: Free-Float 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-15Maxim Defense Industries MXM-47816: 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
Rating
No ratings yet
Log in to rate this part.
Comments
Please log in to read and leave comments.