We have a wide-selection of AR15 and M4E1 complete uppers to fit your needs. Choose from Gen 2 Enhanced, Quantum and our new ATLAS S-ONE and R-ONE lines.
The AR15 Assembled Upper Receiver comes with the port door and forward assist already installed. Match this upper with one of our AR15 lower receivers for a solid and dependable fit.
These solid and dependable uppers give you a great foundation for your AR15 build. Add a barrel and you are one step closer to a complete rifle.
Our state of the art M4E1 platform starts with the M4E1 Upper Receiver. Featuring a one-piece design, it combines the handguard mounting platform with the upper itself.
Aero Precision offers a varied selection to fit your needs. Get your receiver set in either AR15 or M4E1 configurations with color and special edition options.