FMK AR-1 Extreme Polymer Lower Receiver FDE

The FMK AR-1 Extreme is a mil-spec compatible AR-15 stripped lower receiver molded from a high-impact proprietary composite polymer. Manufactured in the USA, this component is designed as a lightweight, durable foundation for AR-15 builds. The receiver weighs 4.3 oz and carries a lifetime warranty. It is finished in a matte Flat Dark Earth color and supplied as a stripped lower.

Key Specifications

• The unit is a stripped lower receiver intended for AR-15 builds.
• Material is a high-impact proprietary composite polymer manufactured in the USA.
• Weight is 4.3 oz for minimal added mass in a build.
• Finish is matte presented in a Flat Dark Earth color.
• Caliber/gauge is listed as .223 REM / 5.56 NATO.
• Action is listed as Semi-Auto in the provided product attributes.
• Model designation is AR-1.
• Manufactured in the USA.
• Includes a lifetime warranty.
• Categorized under Lower Receivers.

Engineered as a practical, lightweight platform for a range of AR-15 projects, the AR-1 Extreme combines polymer durability with a subdued Flat Dark Earth finish. Its low mass and lifetime warranty make it a pragmatic choice for builders seeking a reliable stripped lower that prioritizes weight savings and corrosion resistance.