Aero Precision M4E1 Threaded Complete Upper Receiver 5.56 16in Mid-Length Barrel 1-7 Twist 15in ATLAS R-ONE Handguard A2 Flash Hider Cerakote OD Green
$569.99 at OpticsPlanet · 2 stores
In stock Sale
Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 145in Mid-Length Barrel 1-7 Twist 1/2x28 Thread ATLAS R-ONE Handguard w/VG6 Precision
Aero Precision · Upper Receiver
No ratings yetBest price
$601.99at Kentucky Gun Co
Out of stock checked Oct 23, 2026
In stock now instead
- Aero Precision M4E1 Threaded Complete Upper Receiver 5.56 16in … $569.99at OpticsPlanet
- Spikes Tactical .223 Rem/5.56 16" Barrel Complete Upper Assembl… $598.50at OpticsPlanet
- Rock River Arms Completed Upper Receiver Coyote Rifle .223 Wyld… $593.29at MidwayUSA
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Kentucky Gun Co Best price | $601.99checked Oct 23, 2026 | Out of stock | Buy at Kentucky Gun Co | |
| OpticsPlanet | $654.99Salechecked Oct 23, 2026 | Out of stock | Buy at OpticsPlanet | |
| MidwayUSA | $654.99checked Oct 23, 2026 | Out of stock | Buy at MidwayUSA |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
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This part is out of stock at every store we track. These similar upper receivers are in stock, with today's prices.
Spikes Tactical .223 Rem/5.56 16" Barrel Complete Upper Assembly, Mil-Spec Phosphate Coated, Black Mid-Length
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Rock River Arms Completed Upper Receiver Coyote Rifle .223 Wylde 20 Inch Barrel 1-9 Twist 1/2-28 Thread Free-Float Handguard Vortex Flash Hider Black
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Price history
Dashed line = out of stock. Tracking since Oct 13, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Kentucky Gun Co | $601.99 | $601.99 | $601.99 |
| MidwayUSA | $654.99 | $654.99 | $654.99 |
| OpticsPlanet | $654.99 | $654.99 | $654.99 |
Since Oct 13, 2026.
About this part
The Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 145in Mid-Length Barrel 1-7 Twist 1/2x28 Thread ATLAS R-ONE Handguard w/VG6 Precision is an AR-15 complete upper receiver from Aero Precision. It's sold by 3 stores, from $601.99 to $654.99.
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
Specifications
- Manufacturer
- Aero Precision
- Type
- Complete
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 145in Mid-Length Barrel 1-7 Twist 1/2x28 Thread ATLAS R-ONE Handguard w/VG6 Precision. The R-ONE handguards are designed with size and weight in mind while still providing plenty of real-estate to accommodate any attachment needs the end user may have. 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 M4E1 Threaded 14.5in 5.56 Complete Upper Receiver with Flash Hider: Manufacturer: Aero Precision Caliber: 5.56x45mm NATO Barrel Length: 14.5 in Barrel Profile: Government Gas System Length: Mid Length Barrel Twist Rate: 1-7 Muzzle Device: A2 Flash Hider Finish: QPQ Corrosion Resistant Gun Model: AR-15 Fabric/Material: Chrome Moly Vanadium Gas Block Journal Size-Diameter: .750 in Handguard Length: 12 in Gun Rail: Picatinny Gun Type: Rifle Gun Make: AR Platform Weight: 26 oz Magazine Included: No Condition: New Country of Origin: USA Features of Aero Precision M4E1 Threaded 14.5in 5.56 Complete Upper Receiver with Flash Hider Enhanced forging that gives the upper receiver a "billet look". Picatinny profile that blends seamlessly with our Enhanced Series Handguards. .250 takedown pin holes. Laser engraved T-marks. Includes port door and forward assist installed. 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 mil-spec AR15 upper receivers and barrels. Package Contents: Aero Precision M4E1 Threaded 14.5in 5.56 Complete Upper Receiver with Flash Hider What firearm models does the manufacturer say Aero Precision M4E1 Threaded 14.5in 5.56 Complete Upper Receiver with Flash Hider is compatible with? The manufacturer says that Aero Precision M4E1 Threaded 14.5in 5.56 Complete Upper Receiver with Flash Hider is compatible with AR-15Aero Precision APAR700704M5V38: M4E1 Threaded 5.56mm Complete Upper Receiver 145in Mid-Length Barrel 1-7 Twist 1/2x28 Thread ATLAS R-ONE Handguard w/VG6 Precision Gamma 556 SL Black Anodized
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