Our 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.

Don't forget to buy an Aero Precision M5 (.308) Lower Parts Kit. Our LPK is specifically designed to work with the M5 Lower Receiver and includes custom takedown and pivot pins as well as an extended magazine catch button.

Features:
Works with standard AR 308 components and magazines
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.
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)
Integrated trigger guard
Selector markings will work with 45, 60 or 90 degree safety selectors
Accepts Battle Arms Development short throw safety selectors, but will work with any standard selector
No gap with aftermarket pistol grips