Rock River Arms Completed Upper Receiver Standart A4 .308/7.62X51mm NATO 20 Inch Barrel 1-10 Twist 5/8-24 Thread A2 Handguard A2 Flash Hider Black
$664.99 at MidwayUSA · 2 stores
In stock
Aero Precision M5 Complete Upper Receiver 20in .308 Rifle Barrel w/ATLAS R-ONE 15in M-LOK Handguard Anodized Flat Dark Earth
Aero Precision · Upper Receiver
No ratings yetBest price
$754.99at OpticsPlanet
Out of stock Sale checked Oct 23, 2026
In stock now instead
- Rock River Arms Completed Upper Receiver Standart A4 .308/7.62X… $664.99at MidwayUSA
- Rock River Arms Completed Upper Receiver Predator HP A4 .308/7.… $925.12at MidwayUSA
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $754.99Salechecked Oct 23, 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.
Rock River Arms Completed Upper Receiver Predator HP A4 .308/7.62X51mm NATO 20 Inch Barrel 1-10 Twist Free-Float Handguard Brake Black
$925.12 at MidwayUSA · 2 stores
In stock Sale
Price history
Dashed line = out of stock. Tracking since Oct 13, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $754.99 | $754.99 | $754.99 |
Since Oct 13, 2026.
About this part
The Aero Precision M5 Complete Upper Receiver 20in .308 Rifle Barrel w/ATLAS R-ONE 15in M-LOK Handguard Anodized Flat Dark Earth is an AR-10 complete upper receiver from Aero Precision. One store lists it, OpticsPlanet at $754.99.
Fits and works with
- Caliber
- .308 / 7.62x51 · Shop matching ammo
- Bolt
- AR-10 (.308 / 6.5 CM) · Bolt carrier groups
- Barrel length
- 2E+1" · Handguards
- Handguard length
- 15" · Barrels
Specifications
- Manufacturer
- Aero Precision
- Color
- Flat Dark Earth
- Type
- Complete
- Platform
- AR-10
- Caliber
- .308 / 7.62
From the manufacturer
Aero Precision M5 Complete Upper Receiver 20in .308 Rifle Barrel w/ATLAS R-ONE 15in M-LOK Handguard Anodized Flat Dark Earth. Our proprietary ATLAS attachment system is a durable and dependable mounting platform maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards. Specifications for Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver: Manufacturer: Aero Precision Caliber: .308 Winchester Barrel Length: 20 in Gas System Length: Rifle Length Barrel Twist Rate: 1-10 Muzzle Device: A2 Flash Hider Gun Model: M5 Gas Block Journal Size-Diameter: .750 in Handguard Length: 15 in Gun Rail: Picatinny Gun Type: Rifle Gun Make: Aero Precision Magazine Included: No Condition: New Projectile Caliber: .308 Caliber Country of Origin: USA Features of Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver Full top picatinny rail for optional attachments Quick disconnect sling socket at the 3 6 and 9 o'clock positions Compatible with low profile gas blocks Compatible with AR-308 Upper Recievers with a thread pitch of 1-7/16 x 16 along with a DPMS High Profile (.210) Tang Rail Package Contents: Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver M5 Assembled Upper Receiver ATLAS R-ONE Handguard of choice 16in .308 CMV Barrel Mid-Length Low Profile Gas Block Mid-Length Gas Tube What firearm models does the manufacturer say Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver is compatible with? The manufacturer suggests that Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver is compatible with M5Aero Precision APAR538715M27: M5 Complete Upper Receiver 20in .308 Rifle Barrel w/ATLAS R-ONE 15in M-LOK Handguard Anodized Flat Dark Earth
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