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
Maxim Defense · Upper Receiver
No ratings yetBest price
$1,534.73at OpticsPlanet
In stock Sale Lowest in 30 dayschecked Nov 14, 2026
Fits and works with
- Caliber
- 300 Blackout · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Muzzle thread
- 5/8x24 · Muzzle devices
- Barrel length
- 14" · Handguards
Specifications
- Manufacturer
- Maxim Defense
Compatibility
- Caliber
- 300 Blackout
- Muzzle thread
- 5/8 x 24
- Platform
- AR-15
Dimensions and weight
- Barrel length
- 5.5"
- Weight
- 80 oz (5.0 lb)
Materials and features
- Handguard attachment
- Picatinny
- Color
- Black
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $1,534.73Salechecked Nov 14, 2026 | In 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.
Price history
Lowest in-stock price in the last 30 days: $1,534.73 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 12, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $1,534.73 | $1,534.73 | $1,534.73 |
Since Oct 12, 2026.
About this part
The 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 is a 14" 300 Blackout upper receiver from Maxim Defense. One store lists it, OpticsPlanet at $1,534.73. The lowest in-stock price in the last 30 days was $1,534.73 at OpticsPlanet.
From the manufacturer
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