Aero Precision

The M4E1 Complete Lower Receiver is the perfect base for your custom AR15 pistol build. This complete lower features our new M4E1 Lower Receiver with an A2 Grip and Enhanced Pistol Receiver Extension. Save when you buy it complete and let our specialists do the installation for you! Includes: - M4E1 Stripped Lower Receiver - Anodized Black - A2 Grip - Black - Mil-spec Lower Parts Kit - Enhanced Pistol Receiver Extension - AR15 Carbine Buffer and Spring - These parts are installed