Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 300 BLK Hate Brake 5/8-24 Thread 5.5in Barrel Arid Earth
Maxim Defense · Upper Receiver
No ratings yetBest price
$1,165.50at 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
- 5.5" · 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
- 64 oz (4.0 lb)
Materials and features
- Handguard attachment
- Picatinny
- Color
- Black
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet Best price | $1,165.50Salechecked Nov 14, 2026 | In stock | Buy at OpticsPlanet | |
| AR15Discounts 5% off | $1,165.50checked Nov 14, 2026 | Check store | Buy at AR15Discounts | |
| Dirty Bird | $1,165.50checked Nov 14, 2026 | Check store | Buy at Dirty Bird |
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: $1,165.50 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 15, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $1,165.50 | $1,165.50 | $1,165.50 |
| Dirty Bird | $1,165.50 | $1,165.50 | $1,165.50 |
| OpticsPlanet | $1,165.50 | $1,165.50 | $1,165.50 |
Since Oct 15, 2026.
About this part
The Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 300 BLK Hate Brake 5/8-24 Thread 5.5in Barrel Arid Earth is a 5.5" 300 Blackout upper receiver from Maxim Defense. It's sold by 3 stores, all at $1,165.50. The lowest in-stock price in the last 30 days was $1,165.50 at OpticsPlanet.
From the manufacturer
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