Aero Precision M4E1 Threaded Barreled AR-15 Upper .223 Wylde Fluted Rifle Atlas S-One - 18"
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Aero Precision
Overview
The Aero Precision M4E1 Threaded Barreled AR-15 Upper is a complete upper receiver designed for builders looking to enhance their AR-15 platform. With an 18-inch barrel chambered in .223 Wylde, this upper allows for versatility in ammunition selection, accommodating both .223 Remington and 5.56 NATO rounds, which is ideal for accuracy and performance. The M4E1 receiver type adds a modern aesthetic while providing compatibility with a wide range of lower receivers. This upper is commonly found in builds focused on precision shooting or a balanced approach to both target shooting and hunting.
Specifications
Aero Precision M4E1 Threaded Barreled AR-15 Upper .223 Wylde Fluted Rifle Atlas S-One - 18"
Available Merchants(1)
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Build history on GunPartPicker
Builders on GunPartPicker first added the Aero Precision M4E1 Threaded Barreled AR-15 Upper .223 Wylde Fluted Rifle Atlas S-One - 18" to a build in February 2026.
Today the one retailer we track is out of stock. Listed prices start at $674.99 at Optics Planet for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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