Rock River Arms MID A4 16" Classic Upper .450 Bushmaster 1:24 M-LOK Mid-Length with BCG and CH, Black
Rock River Arms · Upper Receiver
No ratings yetBest price
$567.79at MidwayUSA
In stock Sale checked Oct 2, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| MidwayUSA Best price | $567.79Salechecked Oct 2, 2026 | In stock | Buy at MidwayUSA | |
| OpticsPlanet | $614.99Salechecked Oct 2, 2026 | In stock | Buy at OpticsPlanet | |
| Ammunition Depot | $749.99checked Oct 2, 2026 | In stock | Buy at Ammunition Depot | |
| Palmetto State Armory | $743.99checked Oct 2, 2026 | Check store | Buy at Palmetto State Armory |
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: $567.79 at MidwayUSA. Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Ammunition Depot | $749.99 | $749.99 | $749.99 |
| MidwayUSA | $567.79 | $567.79 | $567.79 |
| OpticsPlanet | $614.99 | $614.99 | $614.99 |
| Palmetto State Armory | $743.99 | $743.99 | $743.99 |
Since Sep 28, 2026.
About this part
The Rock River Arms MID A4 16" Classic Upper .450 Bushmaster 1:24 M-LOK Mid-Length with BCG and CH, Black is a 16" .450 Bushmaster upper receiver from Rock River Arms. It's sold by 4 stores (3 in stock), from $567.79 to $749.99. The lowest in-stock price in the last 30 days was $567.79 at MidwayUSA.
Fits and works with
- Caliber
- .450 Bushmaster · Shop matching ammo
- Bolt
- .458 SOCOM / .450 Bushmaster · Bolt carrier groups
- Gas system
- Mid-length · Handguards
- Barrel length
- 16" · Handguards
Specifications
- Manufacturer
- Rock River Arms
- Color
- Black
- Platform
- AR-15
- Caliber
- .450 Bushmaster
From the manufacturer
Rock River Arms MID A4 16" Classic Upper .450 Bushmaster 1:24 M-LOK Mid-Length with BCG and CH, Black - Enhanced Durability - 450B0592
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