Rock River Arms Completed Upper Receiver A4 .223/5.56mm 10.5 Inch Barrel 1-7 Twist 1/2-28 Thread R4 Handguard A2 Flash Hide Black
$577.99 at MidwayUSA · 3 stores
In stock
Rock River Arms 18" Classic Upper .223 Wylde 1:8 M-LOK Mid-Length with BCG and CH, Black - Precision Hunter
Rock River Arms · Upper Receiver
No ratings yetBest price
$574.99at Ammunition Depot
In stock checked Nov 13, 2026
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Gas system
- Mid-length · Handguards
- Muzzle thread
- 1/2x28 · Muzzle devices
- Barrel length
- 18" · Handguards
Specifications
- Manufacturer
- Rock River Arms
- Color
- Black
- Platform
- AR-15
- Caliber
- .223 Wylde
- Gas system
- Mid
- Barrel length
- 18"
- Twist rate
- 1:8
- Thread pattern
- ½ x 28
- Length
- 13"
- Weight
- 84.32 oz
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Ammunition Depot Best price | $574.99checked Nov 13, 2026 | In stock | Buy at Ammunition Depot | |
| Kentucky Gun Co | $603.75checked Nov 13, 2026 | In stock | Buy at Kentucky Gun Co | |
| OpticsPlanet | $619.99Salechecked Nov 13, 2026 | In stock | Buy at OpticsPlanet | |
| MidwayUSA | $672.99checked Nov 13, 2026 | In stock | Buy at MidwayUSA | |
| GunMag Warehouse | $787.99checked Nov 13, 2026 | In stock | Buy at GunMag Warehouse | |
| Battlehawk Armory | $547.31checked Oct 28, 2026 | Check store | Buy at Battlehawk Armory | |
| Classic Firearms | $632.53checked Nov 13, 2026 | Check store | Buy at Classic Firearms | |
| Palmetto State Armory | $656.99checked Nov 13, 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: $564.39 at MidwayUSA. Dashed line = out of stock. Tracking since Sep 30, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Ammunition Depot | $574.99 | $574.99 | $574.99 |
| Battlehawk Armory | — | $547.31 | $547.31 |
| Classic Firearms | $632.53 | $632.53 | $632.53 |
| GunMag Warehouse | $787.99 | $787.99 | $787.99 |
| Kentucky Gun Co | $603.75 | $603.75 | $624.99 |
| MidwayUSA | $672.99 | $564.39 | $672.99 |
| OpticsPlanet | $619.99 | $579.99 | $619.99 |
| Palmetto State Armory | $656.99 | $656.99 | $656.99 |
Since Sep 30, 2026.
About this part
The Rock River Arms 18" Classic Upper .223 Wylde 1:8 M-LOK Mid-Length with BCG and CH, Black - Precision Hunter is an 18" 5.56 / .223 upper receiver from Rock River Arms. It's sold by 8 stores (5 in stock), from $547.31 to $787.99. The lowest in-stock price in the last 30 days was $564.39 at MidwayUSA.
From the manufacturer
Rock River Arms 18" Classic Upper .223 Wylde 1:8 M-LOK Mid-Length with BCG and CH, Black - Precision Hunter - AR0598.V1
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