Aero Precision | M4E1 Assembled Upper | Kodiak Brown

The Aero Precision M4E1 assembled upper is a mil-spec compatible AR-15 upper receiver finished in Kodiak Brown. Forged from 7075-T6 aluminum and precision machined, it accepts standard mil-spec AR-15 parts and is threaded to accept a standard AR-15 barrel nut. This assembled unit includes the port door and forward assist installed, streamlining builds and reducing parts sourcing. It is appropriate for custom AR-15 builds and for range training or competition setups.

Product Specifications

• The manufacturer is Aero Precision.
• The model is M4E1.
• The product type is an Assembled upper receiver.
• The fit is AR-15.
• The subcategory is Upper Receivers.
• The finish is Anodized.
• The color is Kodiak Brown.
• The material is 7075-T6 aluminum (forged).
• The receiver is threaded to accept a standard AR-15 barrel nut.
• The receiver includes a port door and forward assist pre-installed.
• The receiver is precision machined to work with mil-spec AR-15 parts.
• The listing name indicates an assembly of M4E1 5.56 NATO with M16 cut.
• The product type attribute is listed as Upper.
• The UPC is 840014618354.

This assembled M4E1 upper provides a durable, forged receiver and a machined profile that speeds assembly for builders who value reliability and fitment. The included components reduce parts sourcing and give you a ready platform for custom builds, range work, or competitive configurations while maintaining mil-spec compatibility and a distinctive Kodiak Brown finish.