Aero Precision M4E1 Lower Receiver, Stripped – Anodized

sku: APAR600001C


In stock (can be backordered)

In stock (can be backordered)


This Aero Precision M4E1 Lower Receiver, Stripped – Ano delivers billet aesthetics in a forged package.

The custom-designed, enhanced forging is machined from 7075-T6 Aluminum & is compatible with all mil-spec AR-15 parts.

Aside from the visual upgrades, this custom-engineered design provides features that challenge much more expensive billet options & simplify the assembly process for the at-home builder.

M4E1 Lower Receiver Improvements:

  • Threaded Bolt Catch Roll Pin – Allows for simple installation of the bolt catch & virtually eliminates the possibility of damaging the finish during installation (pin included). 1/16″ Hex Key required for assembly.
  • Integrated Trigger Guard – Eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, creating a stronger, more rigid platform to build upon.
  • Upper Tension Screw – Allows users to fine tune the fit of the upper & lower receiver using a nylon-tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR-15 upper receiver.
  • Threaded Takedown Pin Detent Recess – Allows user to easily install the Takedown Pin detent & spring with the use of a 4-40 set screw (no more launching detents across the room).
  • Increased Magwell Flare – Increased the flare of the magwell to aid in quick & efficient magazine changes.
  • Marked & milled to accept short-throw safety selectors, but will work with standard selectors, as well.


  • Stripped M4E1 Lower Receiver
  • Nylon-tipped tensioning set screw
  • Threaded Bolt Catch Pin


Please add your FFL Information in the notes & have your FFL email their license to with your order number in the subject line.

We cannot process a serialized order without it!

Uppers will ship to the billing address provided & lowers will go to the FFL.


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