Aero Precision | M4E1 5.56 NATO Assembled Upper | Threaded | FDE

The Aero Precision M4E1 Threaded Upper Receiver is a forged, precision-machined AR-15 upper that combines an enhanced, angular profile with compatibility for standard AR15 parts. It is finished in Magpul Flat Dark Earth Cerakote and ships with the port door and forward assist installed. The upper is threaded to accept a standard AR-15 barrel nut and features M4 feedramps for reliable chambering with compatible barrels.

Product Specifications

• The manufacturer is Aero Precision.
• The model is listed as an Assembled Upper (M4E1).
• The fit is specified for AR-15 platforms.
• The cartridge is listed as .223 REM/5.56 NATO.
• The finish is Cerakote in Flat Dark Earth.
• The receiver is threaded and accepts a standard AR-15 barrel nut.
• The upper is forged from 7075-T6 aluminum.
• The product includes a pre-installed port door and forward assist.
• The feedramps are specified as M4 feedramps.
• The takedown pin holes are .250.
• The upper features a new picatinny profile designed to blend with Aero Precision Enhanced and ATLAS Series handguards.
• It is designed to pair with Aero Precision’s M4E1 lower receiver for a matching billet look.
• The listed weight is .75.
• The UPC is 815421021554.

This threaded M4E1 upper is aimed at builders and shooters who want a forged, precision receiver with an upgraded profile and direct compatibility with mil-spec AR-15 parts. It suits range use and building or upgrading a sporter/competition rifle where an enhanced receiver profile and Cerakote finish are valued.