The M5 complete lower receiver serves as an optimal foundation for custom big-bore AR builds. This assembly includes the custom-designed M5 lower receiver enhanced with a MOE grip and PRS Gen 3 precision Adjustable stock. Purchasing the complete assembly offers cost savings and professional installation by our specialists. The M5 lower receiver is engineered to set the benchmark for big-bore AR configurations. Constructed from 7075-T6 aluminum, this enhanced forging is compatible with standard AR-08 components and magazines. It incorporates advanced features such as a threaded bolt catch roll pin, integrated trigger guard, upper tension screw, threaded takedown pin detent recess and an expanded magwell flare. The assembly also includes custom takedown and pivot pins, along with an extended magazine catch button.

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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).