Aero Precision APAR600128: The M4E1 Complete Lower Receiver is the perfect base for your custom AR15 build. This complete lower features our custom designed M4E1 Lower Receiver and is upgraded to include a MOE SL Grip and MOE SL-S™ Carbine Stock.

Includes:

• M4E1 Stripped Lower Receiver
• MOE SL® Grip
• MOE® SL-S™ Carbine Stock
• Lower Parts Kit
• Carbine Receiver Extension
• AR15 Carbine Buffer and Spring
• These parts are installed

Aero Precision's M4E1 Lower Receiver delivers billet aesthetics at a forged price. This custom designed enhanced forging is machined from 7075-T6 Aluminum and compatible with all mil-spec AR15 parts. It has been engineered with upgraded features, including a threaded bolt catch roll pin, integrated trigger guard, upper tension screw, threaded takedown pin detent recess and increased magwell flare.