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
M4E1 Superlative Arms Groups Piston Upper 16in Barrel 15in Handguard Black
Aero Precision · Upper Receiver
No ratings yetBest price
$929.00at Brownells
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 Predator HP A4 .308/7.… $925.12at MidwayUSA
- ARAK-21 5.56 NATO Complete Upper Receiver 16" Medium Bbl BLK $919.08at Kentucky Gun Co
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells | $929.00checked Oct 23, 2026 | Out of stock | Buy at Brownells |
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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In stock Sale
Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $929.00 | $929.00 | $929.00 |
Since Sep 28, 2026.
About this part
The M4E1 Superlative Arms Groups Piston Upper 16in Barrel 15in Handguard Black is an AR-15 complete upper receiver from Aero Precision. One store lists it, Brownells at $929.00.
Fits and works with
- Barrel length
- 16" · Handguards
- Handguard length
- 16" · Barrels
Specifications
- Manufacturer
- Aero Precision
- Color
- Black
- Type
- Complete
- Platform
- AR-15
From the manufacturer
The M4E1 Superlative Arms Complete Upper Receiver Groups, built by Aero Precision, feature the well-regarded Superlative Arms Piston Kit. This Upper Receiver was spec'ed out by Brownells and Aero Precision to integrate seamlessly with the Superlative Arms Kit. Perfect for a Suppressor host or for those who simply don't like cleaning the chamber area of your AR-15, these Upper Receivers vent hot gasses and debris at the gas block, not in the receiver like a traditional gas impingement AR. The adjustable Superlative Arms Gas Block allows you to fine tune your gas setting and can be easily adjusted through the front of the handguard. The gas piston can eas Mfg: Aero Precision
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