Aero Precision M4E1 Threaded Complete Upper 18" 5.56 Rifle Length Barrel ATLAS R-ONE 15" M-LOK HG Anodized
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Overview
The Aero Precision M4E1 Threaded Complete Upper 18" 5.56 Rifle Length Barrel ATLAS R-ONE 15" M-LOK HG Anodized is a upper receiver. Compare prices from multiple merchants and find the best deal.
Specifications
Build history on GunPartPicker
Builders have been adding the Aero Precision M4E1 Threaded Complete Upper 18" 5.56 Rifle Length Barrel ATLAS R-ONE 15" M-LOK HG Anodized to their builds on GunPartPicker since May 2026. All time, it ranks #164 of the 1,599 upper receivers builders have added.
It was in stock most days in August 2026, but today the one retailer we track is out of stock. It dipped to $143 at Brownells for a stretch in August 2026, well under its usual $160.99, so sales do come around. Listed prices start at $569.99 at AR15 Discounts for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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