The Aero Precision M4E1 lower receiver delivers billet aesthetics in a forged package. This custom designed enhanced forging is machined from 7075-T6 Aluminum and compatible with all mil-spec AR15 parts. Aside from the visual upgrades, several functional features have been added to simplify the assembly process for the at-home builder.
Threaded Bolt Catch Roll Pin
Integrated Trigger Guard
Upper Tension Screw
Threaded Takedown Pin Detent Recess
Increased Magwell Flare
Marked and Milled for Short-Throw Safety Selectors
Made in USA