The Aero Precision 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 Aero Precision M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept standard .308 components and is the perfect upper for your big bore build. Match this with our M5 .308 lower receiver for a solid and dependable fit.

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.

Lower 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

Upper Features:

M4 Feedramps

.2795 takedown pin holes

Laser engraved T-marks

DPMS High Profile (.210) Tang)

Includes port door and forward assist

Includes: