Aero Precision M5 Lower Receiver

Aero Precision’s M5 .308 Stripped Lower Receiver helps you build a big-bore AR from the ground up. Mil-spec dimensions and coating ensure the highest quality and correct component interface. The rear takedown pin detent hole is threaded for a 4-40 set screw; bolt catch is threaded for a screw pin (no roll pin needed); selector markings work with 45, 60, or 90 degree standard safety selectors;