The FMK Firearms AR-1 eXtreme stripped lower receiver is an AR-15 pattern foundation built from a proprietary high impact composite polymer. Manufactured in the USA, it’s designed to deliver superior strength, durability, and very low weight for custom builds. This stripped lower accepts standard MIL-SPEC AR-15 uppers and is compatible with most current AR-15 lower parts kits, grips, and stocks, giving you a lightweight starting point with lifetime warranty coverage.

Key features

• Proprietary high impact composite polymer for strength and durability
• Extremely lightweight at 4.30 oz
• Made in the USA with a lifetime warranty
• Stripped design for use with your selected AR-15 lower parts and setup
• Accepts standard MIL-SPEC AR-15 uppers for flexible build options
• Custom engraving: "The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants."

Build your next AR-15 with a lightweight, composite-polymer lower receiver designed for rugged use.