Aero Precision

The M4E1 Complete Lower Receiver is the perfect base for your custom AR15 build. This complete lower features Aero Precision's Thunder Ranch Special Edition M4E1 Lower Receiver and is upgraded to include a MOE® Grip and MOE SL® Stock. Save when you buy it complete and let Aero's specialists do the installation for you!

M4E1 Thunder Ranch Special Edition Lower Receiver Improvements:

• Skeletonized Magwell - Cuts weight and provides a unique look for Aero's M4E1 Lower Receivers.
• 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). 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 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.
• Marked and milled to accept short-throw safety selectors, but will work with standard selectors as well.

Includes:

• M4E1 Stripped Lower Receiver, Special Edition: Thunder Ranch
• MOE® Grip
• MOE SL® Stock
• Lower Parts Kit
• ALG Defense Quality Mil-Spec Trigger (QMS)
• AR15 Carbine Buffer, Tube and Spring
• These parts are installed