Manufactured in the USA of a high-impact proprietary composite polymer. This state-of-the-art polymer allows for superior strength and unmatched
durability and is extremely lightweight. The AR1 Extreme is the strongest composite polymer lower on the market today. The key to any good project is the foundation and on an AR-15, that is the lower receiver.

Superior strength – Built with proprietary composite polymer to with stand extreme conditions.
Unmatched durability - When most lowers dent or break the AR1 Extreme bounces back to shape.
Extremely lightweight - 4.3oz
Accepts all standard MILSPEC uppers up to.50 Beowulf
CompatiblewithmostcurrentAR15 lower parts kits, grips and stocks.

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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).

FMK AR-Extreme Polymer AR-15 Lower, FDE - FMKGAR1EDE