Aero Precision M4E1 Enhanced 10.5\" 5.56 Barrel Complete Upper Receiver with 9\" Quad Rail - Anodized Black - APAR640221Q2
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Aero Precision
Overview
The Aero Precision M4E1 Enhanced Complete Upper Receiver features a 10.5" barrel chambered in 5.56 NATO, optimized for performance in compact builds. This upper is part of the M4E1 platform, providing a streamlined design and enhanced compatibility with various AR-15 components. With its 9" quad rail, you can easily attach accessories for improved versatility, making it a great choice for short-barreled rifles and tactical setups.
Specifications
Aero Precision M4E1 Enhanced 10.5\" 5.56 Barrel Complete Upper Receiver with 9\" Quad Rail - Anodized Black - APAR640221Q2
Build history on GunPartPicker
Builders on GunPartPicker first added the Aero Precision M4E1 Enhanced 10.5\" 5.56 Barrel Complete Upper Receiver with 9\" Quad Rail - Anodized Black - APAR640221Q2 to a build in March 2026.
It was out of stock everywhere we track for all of August 2026, and today the one retailer we track is out of stock. Listed prices start at $534.99 at Classic Firearms for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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