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 15in ATLAS R-ONE M-LOK Complete Upper 16in 5.56 HBAR CMV Mid-Length Barrel Anodized Black
Aero Precision · Upper Receiver
No ratings yetBest price
$543.99at 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
- Rock River Arms Completed Upper Receiver Elite Carbine A4 .223/… $527.00at MidwayUSA
- Spikes Tactical .223 Rem/5.56 16" Barrel Complete Upper Assembl… $567.00at OpticsPlanet
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Kentucky Gun Co Best price | $543.99checked Oct 23, 2026 | Out of stock | Buy at Kentucky Gun Co | |
| OpticsPlanet | $589.99Salechecked 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.
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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.
Rock River Arms Completed Upper Receiver Elite Carbine A4 .223/5.56mm 16 Inch Barrel 1-9 Twist Mid-Length Profile 1/2-28 Thread A2 Flash Hider Black
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Price history
Dashed line = out of stock. Tracking since Oct 12, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Kentucky Gun Co | $543.99 | $543.99 | $543.99 |
| OpticsPlanet | $589.99 | $589.99 | $589.99 |
Since Oct 12, 2026.
About this part
The Aero Precision M4E1 15in ATLAS R-ONE M-LOK Complete Upper 16in 5.56 HBAR CMV Mid-Length Barrel Anodized Black is an AR-15 complete upper receiver from Aero Precision. It's sold by 2 stores, from $543.99 to $589.99.
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
- Barrel length
- 15" · Handguards
- Handguard length
- 15" · Barrels
Specifications
- Manufacturer
- Aero Precision
- Color
- Black
- Type
- Complete
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
Aero Precision M4E1 15in ATLAS R-ONE M-LOK Complete Upper 16in 5.56 HBAR CMV Mid-Length Barrel Anodized Black Black. Specifications for Aero Precision M4E1 16in 5.56 ATLAS R-ONE M-LOK Complete Upper Receiver with Flash Hider: Manufacturer: Aero Precision Caliber: 5.56x45mm NATO Overall Length: 26 in Barrel Length: 16 in Barrel Twist Rate: 1-7 Muzzle Device: A2 Flash Hider Gun Model: AR-15 Gas Block Journal Size-Diameter: .750 in Handguard Length: 15 in Handguard Style: Quad Rail Gun Make: AR Platform Barrel Material: 4150 Chrome Moly Vanadium Weight: 48.5 oz Bolt Carrier Group Included: No Charging Handle Included: No Magazine Included: No Condition: New Country of Origin: USA Features of Aero Precision M4E1 16in 5.56 ATLAS R-ONE M-LOK Complete Upper Receiver with Flash Hider Laser engraved T-marks Comes assembled with port door and forward assist installed Accepts standard AR15/M16 components Handguard mounting platform is forged into the receiver Works with Aero Precision handguards but also fits most BAR-system handguards ATLAS S-ONE Handguard Features: Front and rear picatinny rail Eliminated center of top rail for weight reduction Indexing grooves in 12:00 position for positive grip control Compatible with mil-spec AR15 upper receivers and barrels MLOK attachment points Package Contents: Aero Precision M4E1 16in 5.56 ATLAS R-ONE M-LOK Complete Upper Receiver with Flash Hider M4E1 Enhanced Assembled Upper Receiver 15in ATLAS R-ONE M-LOK Handguard 16in 5.56 HBAR barrel Low Profile Gas Block and Mid-Length Gas Tube Product comes assembled What firearm models does the manufacturer say Aero Precision M4E1 16in 5.56 ATLAS R-ONE M-LOK Complete Upper Receiver with Flash Hider is compatible with? The manufacturer suggests that Aero Precision M4E1 16in 5.56 ATLAS R-ONE M-LOK Complete Upper Receiver with Flash Hider is compatible with AR-15Aero Precision APAR700705M97: M4E1 15in ATLAS R-ONE M-LOK Complete Upper 16in 5.56 HBAR CMV Mid-Length Barrel Anodized Black Black
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