Aero Precision M4E1 Complete Lower Receiver w/ MOE SL® Grip & SL Carbine Stock - Anodized Black

Aero Precision M4E1 Complete Lower Receiver w/ MOE SL® Grip & SL Carbine Stock

The Aero Precision M4E1 Complete Lower Receiver brings the next generation of AR‑15 design to your build. Crafted from 7075‑T6 aluminum and finished in a hard‑coat black anodize, the M4E1 lower features enhanced lower receiver geometry, integrated flared magwell, and enlarged takedown pockets for a tighter, more stable upper‑to‑lower interface. With a Magpul MOE SL® grip and SL Carbine stock installed on a precision carbine extension, it offers immediate comfort and control.

Aero’s M4E1 M‑LOK compatibility and reinforced magazine well ease reloads and reduce wobble, while the integral trigger guard provides extra rigidity for reliable performance in all environments. The included lower parts kit and buffer assembly ensure you have everything needed to complete the build, saving you time and ensuring proper component fit. The rear takedown pin detent and spring are installed from underneath the grip, simplifying maintenance and reducing the chances of losing small parts.

This complete lower is fully compatible with standard AR-15 upper receivers and designed to work with a wide range of calibers, making it a versatile foundation for custom builds. The minimalist SL stock offers a compact profile with enhanced cheek weld, while the MOE SL® grip delivers an aggressive angle and texturing for improved control during rapid fire. Whether you’re crafting a duty rifle, a lightweight trail carbine, or a competition gun, the Aero M4E1 lower sets the standard for fit, finish, and functionality.

Backed by Aero Precision’s lifetime warranty and manufactured to exacting Mil‑Spec tolerances, this complete lower receiver is the fastest way to professional‑level AR‑15 reliability and performance.