Aero Precision M4E1 Assembled Upper Receiver – OD Green Cerakote

The Aero Precision M4E1 Assembled Upper Receiver in OD Green Cerakote provides a complete forged 7075-T6 aluminum upper with integrated forward assist and ejection port cover, ready for your barrel and handguard installation. This assembled upper fits standard mil-spec AR-15 lower receivers and features Aero's M4E1 enhanced design with a squared-off profile that mates cleanly with modern handguards. The OD Green Cerakote finish offers both corrosion resistance and a distinct appearance for custom build projects.

The upper is fully assembled with forward assist, ejection port cover, and dust cover spring already installed. The M4E1 design uses a proprietary barrel nut system (sold separately) that simplifies handguard installation and eliminates the need for timing shims. Forged construction ensures MIL-SPEC dimensions and durability. No barrel, bolt carrier group, or charging handle included—this is the upper receiver only.

• Platform: AR-15 / M4
• Material: Forged 7075-T6 Aluminum
• Finish: OD Green Cerakote
• Type: Assembled Upper Receiver
• Features: Forward Assist, Ejection Port Cover Pre-Installed
• Compatible Lower: Mil-Spec AR-15
• Includes: Upper Receiver Only (No BCG, Charging Handle, or Barrel)
• Installation: Requires Barrel, Gas System, Handguard, BCG, and Charging Handle