Aero Precision M4E1 Enhanced Barreled AR-15 Upper 5.56 Rifle Gen 2 - 18"
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Aero Precision
Overview
The Aero Precision M4E1 Enhanced Barreled AR-15 Upper is a complete assembly designed for builders looking to create a reliable 5.56 NATO platform. Featuring an 18-inch barrel with a 1:7 twist rate, this upper is optimized for stabilizing a wide range of bullet weights, making it versatile for various shooting applications. The rifle-length gas system ensures smooth cycling, which is ideal for both accuracy and reliability in longer configurations. This upper is frequently found in builds focused on precision shooting or tactical applications.
Specifications
Aero Precision M4E1 Enhanced Barreled AR-15 Upper 5.56 Rifle Gen 2 - 18"
Available Merchants(4)
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Build history on GunPartPicker
Builders have been adding the Aero Precision M4E1 Enhanced Barreled AR-15 Upper 5.56 Rifle Gen 2 - 18" to their builds on GunPartPicker since April 2026. All time, it ranks #321 of the 1,654 upper receivers builders have added.
It was out of stock everywhere we track for all of September 2026, and today none of the 4 retailers we track has it in stock right now. Listed prices start at $599.99 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 builds that include this one
Aero Precision M4E1 Lower Complete W/ MOE SL Grip & SL Stock
Magpul AFG-2 Angled Fore Grip - Black
Aero Precision AR-15 5.56 BCG W/C158 Bolt - Aero Logo - Phosphate
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
Geissele Automatics Super Semi-Automatic Enhanced SSA-E Two Stage AR-15 Trigger .154"
Magpul MOE-SL Grip Polymer Black
Builds Featuring This Part
See all 1 →Builds in the community that include the Aero Precision M4e1 Enhanced Barreled Ar-15 Upper 5.56 Rifle Gen 2 - 18"
| Build | Parts | Total |
|---|---|---|
 | 25 | $2981.05 |
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