Aero Precision AR-15 M4E1-T 10.5 in Atlas R-One Complete Upper 5.56mm FDE
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Aero Precision
Overview
The Aero Precision AR-15 M4E1-T 10.5 in Atlas R-One Complete Upper is a fully assembled upper receiver designed for the AR-15 platform, featuring a compact 10.5-inch barrel optimized for 5.56 NATO caliber. Its M4 contour and FDE finish provide both functionality and a sleek aesthetic, while the billet aluminum construction ensures durability and precise fitment. This upper is commonly utilized in builds that favor a carbine gas system, making it an excellent choice for those looking to create a reliable and tactical firearm.
Specifications
Aero Precision AR-15 M4E1-T 10.5 in Atlas R-One Complete Upper 5.56mm FDE
Build history on GunPartPicker
Builders have been adding the Aero Precision AR-15 M4E1-T 10.5 in Atlas R-One Complete Upper 5.56mm FDE to their builds on GunPartPicker since February 2026. All time, it ranks #600 of the 1,634 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in 5.56 NATO, split between carbine-length (50%) and mid-length (50%) gas systems, and nearly all AR-15.
It was out of stock everywhere we track for all of August 2026, and today none of the 3 retailers we track has it in stock right now. Listed prices start at $569.99 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 10 builds that include this one
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Hogue AR-15 Overmolded Buttstock Collapsible Comm FDE Rubber
Phase 5 Weapon Systems Extended, V3, Bolt Release, Flat Dark Earth
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all 1 →Builds in the community that include the Aero Precision Ar-15 M4e1-T 10.5 in Atlas R-One Complete Upper 5.56mm Fde
| Build | Parts | Total |
|---|---|---|
 | 8 | $1813.40 |
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