Aero Precision M4E1 Threaded Barreled AR-15 Upper .223 Wylde Fluted Rifle Atlas R-One - 18"
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Aero Precision
Overview
The Aero Precision M4E1 Threaded Barreled AR-15 Upper features an 18" stainless steel barrel chambered in .223 Wylde, allowing for safe and reliable firing of both .223 Remington and 5.56 NATO ammunition. With a rifle-length gas system and a 1:8 twist rate, this upper provides excellent accuracy and performance for a variety of loads. This configuration is commonly found in builds that prioritize precision shooting while maintaining versatility in ammunition selection.
Specifications
Aero Precision M4E1 Threaded Barreled AR-15 Upper .223 Wylde Fluted Rifle Atlas R-One - 18"
Build history on GunPartPicker
Builders have been adding the Aero Precision M4E1 Threaded Barreled AR-15 Upper .223 Wylde Fluted Rifle Atlas R-One - 18" to their builds on GunPartPicker since March 2026. All time, it ranks #959 of the 1,709 upper receivers builders have added.
Today none of the 2 retailers we track has it in stock right now. 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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