Aero Precision M4E1 15in ATLAS R-ONE M-LOK Complete Upper 16in 5.56 HBAR CMV Mid-Length Barrel Anodized Black Black
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Aero Precision
Overview
The Aero Precision M4E1 15in ATLAS R-ONE M-LOK Complete Upper is designed for builders looking for a ready-to-install upper that combines a sleek black finish with practical functionality. This upper features a 15-inch barrel chambered in 5.56 NATO and a mid-length gas system, which can enhance reliability and reduce recoil. Commonly used in tactical or competition builds, this upper receiver provides a solid foundation for a versatile and capable AR-15 setup.
Specifications
Aero Precision M4E1 15in ATLAS R-ONE M-LOK Complete Upper 16in 5.56 HBAR CMV Mid-Length Barrel Anodized Black Black
Price and stock
The Aero Precision M4E1 15in ATLAS R-ONE M-LOK Complete Upper 16in 5.56 HBAR CMV Mid-Length Barrel Anodized Black Black was out of stock everywhere we track for all of September 2026, and today none of the 3 retailers we track has it in stock right now. Listed prices start at $543.99 at KY Gun Company for when it comes back.
Prices checked · refreshed daily across 37 retailers
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