Aero Precision, M4E1, Semi-automatic; Stripped Lower Receiver, 223 Remington/556NATO, Anodized Finish, Black

The 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 this custom engineered design provides that challenge much more expensive billet options, we have added several functional features to the lower receiver 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 to accept short-throw safety selectors, but will work with standard selectors as well
Works with standard AR15 components and magazines
Perfect base for your custom AR15 build
Machined to mil-spec dimension