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 5.56mm 16in M-LOK Upper Receiver M4 Carbine Length Barrel 1-7 Twist 1/2x28 15in M-LOK Handguard Gen 2 FDE Cerakote
Aero Precision · Upper Receiver
No ratings yetBest price
$614.99at OpticsPlanet
Out of stock Sale 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 National Match A4 .223… $618.03at MidwayUSA
- Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stoc… $620.39at OpticsPlanet
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $614.99Salechecked 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.
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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 |
|---|---|---|---|
| OpticsPlanet | $614.99 | $614.99 | $614.99 |
Since Oct 12, 2026.
About this part
The Aero Precision M4E1 5.56mm 16in M-LOK Upper Receiver M4 Carbine Length Barrel 1-7 Twist 1/2x28 15in M-LOK Handguard Gen 2 FDE Cerakote is a 16" 5.56 / .223 upper receiver from Aero Precision. One store lists it, OpticsPlanet at $614.99.
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
- Carbine · Handguards
- Muzzle thread
- 1/2x28 · Muzzle devices
- Barrel length
- 16" · Handguards
- Handguard length
- 16" · Barrels
Specifications
- Manufacturer
- Aero Precision
- Color
- Flat Dark Earth
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
Aero Precision M4E1 5.56mm 16in M-LOK Upper Receiver M4 Carbine Length Barrel 1-7 Twist 1/2x28 15in M-LOK Handguard Gen 2 FDE Cerakote. This is a streamlined design that only needs eight screws to mount a free-floating handguard making these AR15 Upper Receivers a more robust durable system that you can count on. This complete upper receiver even comes with an A2 flash hider and Picatinny rails so you are immediately ready to mount optics and take it to the range after installing it on a lower receiver. Pick one up today to complete your carbine build Specifications for Aero Precision M4E1 16in 5.56mm 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 Firearms Threads Per Inch: 1/2x28 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Gun Model: AR-15 Fabric/Material: 4150 CrMoV 7075-T6 Aluminum Gas Block Journal Size-Diameter: .750 in Handguard Length: 15 in Handguard Style: M-LOK w/ Top Picatinny Rail System Gun Rail: M-LOK Gun Type: Carbine 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 Threads per Inch: 1/2x28 Features of Aero Precision M4E1 16in 5.56mm Complete Upper Receiver with Flash Hider: Laser engraved T-marks Comes assembled with port door and forward assist installed Handguard mounting platform is forged into the receiver Works with Aero Precision handguards but also fits most BAR-system handguards Built in anti-rotation tabs Scalloped rails Continuous top rail 1.78" inside diameter fits most muzzle devices and 1.5" suppressors Compatible with low profile gas blocks .0785 Gas Port M4 Feed Ramp Extension HP and MPI tested Package Contents: Aero Precision M4E1 16in 5.56mm Complete Upper Receiver with Flash Hider Gen 2 Enhanced Handguard Barrel Nut Wrench What firearm models does the manufacturer say Aero Precision M4E1 16in 5.56mm Complete Upper Receiver with Flash Hider is compatible with? The manufacturer says that Aero Precision M4E1 16in 5.56mm Complete Upper Receiver with Flash Hider is compatible with AR-15 M16Aero Precision APAR640252M6: M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EM-15 HG Gen 2 FDE Cerakote
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