Spikes Tactical .223 Rem/5.56 16" Barrel Complete Upper Assembly, Mil-Spec Phosphate Coated, Black M4
$567.00 at OpticsPlanet · 3 stores
In stock Sale
M4E1 5.56 NATO Assem Uppr Rcvr M4 10.5" Bbl Carbine Black
Aero Precision · Upper Receiver
No ratings yetBest price
$534.99at Brownells
Out of stock checked Oct 1, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells Best price | $534.99checked Oct 1, 2026 | Out of stock | Buy at Brownells | |
| OpticsPlanet | $534.99Salechecked Oct 1, 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.
Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $534.99 | $534.99 | $534.99 |
| OpticsPlanet | $534.99 | $534.99 | $534.99 |
Since Sep 28, 2026.
About this part
The M4E1 5.56 NATO Assem Uppr Rcvr M4 10.5" Bbl Carbine Black is an AR-15 complete upper receiver from Aero Precision. It's sold by 2 stores, all at $534.99.
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
- Barrel length
- 10.5" · Handguards
Specifications
- Manufacturer
- Aero Precision
- Color
- Black
- Type
- Complete
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
Aero Precision's M4E1 5.56mm Carbine Upper Receiver comes fully assembled, minus only the bolt/carrier group and charging handle - the two components any AR-15 fan with even a little urge to customize wants to replace anyway. Aero's M4E1 receiver combines the unique look of a custom billet receiver with the affordability and "mil-spec" parts compatibility of a forged receiver. The M4E1 5.56mm Carbine Upper Receiver comes with Aero Precision's latest Gen 2 Enhanced M-LOK Handguard installed to form a solid, monolithic accessory mounting platform. The full-length Picatinny top rail runs from the rear of the receiver across the entire length of the handguard, whic Mfg: Aero Precision
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