This is the new upper and lower receiver set by Aero Precision. Aero Precision is known for superior engineering and machining. They push the boundaries of manufacturing and challenge the status quo by constantly looking for new ways to develop and evolve. The M4E1 Receiver set delivers billet aesthetics in a forged package. This enhanced forging is machined from 7075-T6 aluminum and compatible with all MIL-SPEC AR-15 parts. Marked and milled to accept short-throw safety selectors, but will work with standard selectors as well. The M4E1 Threaded Upper Receiver is designed to pair perfectly with the Aero M4E1 Lower Receiver, offering a billet look without the billet price.
- M4E1 Lower Receiver in Anodized Black
- M4E1 Threaded Assembled Upper Receiver in Anodized Black
M4E1 Lower Receiver Features:
- Threaded Bolt Catch Roll Pin – Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included).
- 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 and 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 AR15 upper receiver.
- Threaded Takedown Pin Detent Recess – Allows user to easily install the Takedown Pin detent and 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 and efficient magazine changes.
M4E1 Threaded Upper Receiver Features:
- New enhanced forging that gives the upper receiver a “billet look”
- New picatinny profile that blends seamlessly with our Enhanced and ATLAS Series Handguards
- M4 Feedramps
- .250 takedown pin holes
- Lazer engraved T-marks