Aero Precision M4E1 Upper ODG | 5.56 NATO | Threaded

The Aero Precision M4E1 Assembled Upper in Olive Drab Green is a forged 7075-T6 aluminum AR-15 upper receiver designed for modern service-rifle builds and precision range use. Its angular machined profile distinguishes it from standard mil-spec receivers while remaining compatible with mil-spec AR-15 parts. The upper is threaded to accept a standard AR-15 barrel nut and features an M16 cut. It ships with the port door and forward assist pre-installed for quicker assembly into a complete rifle.

Product Specifications

• The manufacturer is Aero Precision.
• The model is M4E1.
• The caliber designation in the product name is 5.56 NATO.
• The finish is Anodized.
• The color is Olive Drab Green.
• The receiver is forged from 7075-T6 Aluminum.
• The upper is threaded to accept a standard AR-15 barrel nut.
• The receiver includes a pre-installed port door.
• The receiver includes a pre-installed forward assist.
• The design features an angular machined profile that differs from standard mil-spec uppers.
• The upper is precision machined to work with mil-spec AR-15 parts.
• The fitment is for AR-15 platforms.
• The product type is Upper.
• The subcategory is Upper Receivers.
• The UPC is 840014618330.

Whether assembling a duty-style rifle or building a precision-oriented AR-15 for the range, the M4E1 upper offers a robust, compatible foundation and a distinctive, machined appearance in Olive Drab Green. Its forged construction and pre-installed components reduce parts fitment uncertainty and streamline build time for experienced builders.