Aero Precision M4E1 Assembled Gen 2 Upper Receiver 18 Rifle Length
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Aero Precision
Overview
The Aero Precision M4E1 Assembled Gen 2 Upper Receiver is a complete upper designed for the AR-15 platform, featuring an 18-inch barrel with a M4 contour. This upper utilizes a rifle-length gas system, optimized for reliable cycling and reduced recoil, while accommodating the versatile .223 Wylde caliber which allows for the use of both .223 Remington and 5.56 NATO ammunition. This upper receiver is commonly found in builds that prioritize long-range accuracy and performance, making it a solid choice for precision shooting setups.
Specifications
Aero Precision M4E1 Assembled Gen 2 Upper Receiver 18 Rifle Length
Price and stock
The Aero Precision M4E1 Assembled Gen 2 Upper Receiver 18 Rifle Length was out of stock everywhere we track for all of September 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $544.99 at Brownells for when it comes back.
Prices checked · refreshed daily across 37 retailers
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