The M5 .308 Win Stripped Lower Receiver is the perfect foundation for building a powerful and reliable big-bore AR. precision-machined to Mil-Spec dimensions, it ensures seamless compatibility with standard components while delivering exceptional durability and performance. A high-quality coating enhances resistance to wear and corrosion, making it a long-lasting choice for any build. For a hassle-free assembly, pair it with the Aero Precision M5 (.308 Win) Lower Parts Kit, specifically designed to fit this receiver. The kit includes custom takedown and pivot pins, along with an extended magazine catch button for enhanced functionality. Whether starting a custom build or upgrading an existing platform, the M5 .308 Win Stripped Lower Receiver provides the strength and precision needed for superior results.

Works seamlessly with standard AR .308 Win components and magazines
Upper tension screw allows users to precisely adjust the fit between the upper and lower receiver with a nylon-tipped tensioning set screw, ensuring a secure and rattle-free connection
Rear takedown pin detent hole is threaded for a #4-40 set screw, allowing customization
Bolt catch is threaded for a screw pin, eliminating the need for a roll pin and simplifying assembly
The integrated trigger guard enhances durability and protection while providing a seamless, ergonomic design for improved handling and control
Selector markings are designed to work seamlessly with 45, 60 or 90 deg safety selectors for user preference
Accepts Battle Arms Development short throw safety selectors while maintaining compatibility with standard selectors
No gap with aftermarket pistol grips ensures a seamless and ergonomic fit for improved handling
The stripped M5 (.308 Win) lower receiver includes a nylon-tipped tensioning set screw for a precise and secure fit

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If you live in California, please read this notice before ordering.

Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Magazines will be removed from firearms when shipping to states with magazine capacity restrictions.

Must be 21 or older to purchase.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).