Aero Precision M4E1 Assembled AR 15 Upper Receiver 5.56x45mm Mid-Length 16 Barrel
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Aero Precision
Overview
The Aero Precision M4E1 Assembled AR-15 Upper Receiver is a complete upper that features a 16-inch barrel chambered in 5.56 NATO, designed to provide reliable performance and accurate shooting. Its mid-length gas system helps to enhance cycling efficiency and reduce recoil, making it a preferred choice for builders looking for a balanced setup. This upper receiver is commonly found in builds that prioritize versatility and moderate-range accuracy with the 5.56 NATO caliber.
Specifications
Aero Precision M4E1 Assembled AR 15 Upper Receiver 5.56x45mm Mid-Length 16 Barrel
Available Merchants(5)
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Build history on GunPartPicker
Builders on GunPartPicker first added the Aero Precision M4E1 Assembled AR 15 Upper Receiver 5.56x45mm Mid-Length 16 Barrel to a build in February 2026.
It was hard to find in August 2026, in stock on only 8 of the 26 days we checked, and today none of the 5 retailers we track has it in stock right now. It dipped to $498.81 at Brownells for a stretch in August 2026, well under its usual $565.99 to $589.99, so sales do come around. Listed prices start at $543.99 at KY Gun Company for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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