Aero Precisions M4A1 Clone Complete Lower Receiver features custom engraving on their AR15 Gen 2 Lower Receiver and is the perfect complete lower for your M4A1 clone build.

M4A1 Lower Receiver Features:

• Custom Aero Precision logo
• Markings include: Property of U.S.A., MOD M4 CARBINE, CAL. 5.56MM
• Serial number designation
• Safe/Semi/Auto safety selector markings

Includes:

• M4A1 Clone Lower Receiver
• Standard Collapsible Stock
• Standard A2 Grip
• Lower parts kit
• Receiver extension
• Carbine buffer kit
• These parts are installed

Gen 2 Lower Receiver Features:

• Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver through the use of a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
• Increased Magwell Flare - Allows for easier insertion of magazines and provides a sleeker look.