FMK AR-15 Polymer Stripped Lower Receiver – Black

The FMK AR-15 Polymer Lower Receiver is a lightweight, high-strength stripped lower designed as a foundation for AR-15 platform builds. Constructed from composite polymer and specified at approximately 4.3 ounces, it aims to reduce overall system weight without adding unnecessary bulk. As a stripped lower receiver, it requires separate components and assembly to become a complete rifle.

Key Specifications

• Made from composite polymer to provide a lightweight foundation for AR-15 builds.
• Specified weight of approximately 4.3 oz for reduced carry and handling weight.
• Compatible with .223 Rem / 5.56 NATO caliber platforms as indicated by the manufacturer.
• Designed for Semi-Auto action configurations.
• Finished in Black for a standard AR-15 appearance.
• Identified as AR-15 model compatibility.
• Product type listed as a Stripped Lower Receiver that requires additional parts to complete a firearm.
• Categorized under Lower Receivers for AR-15 platforms.
• Manufactured by FMK Firearms.
• Requires additional components for completion (receiver, fire control group, stock/brace, buffer system, and other parts not included).

This FMK polymer stripped lower offers a practical option for builders who prioritize weight savings and corrosion-resistant materials in their AR-15 projects. Its lightweight construction and standard form factor make it well suited for sport shooting and general-purpose builds where a durable, low-mass receiver is desired. Combine with compatible parts to complete a reliable, custom-configured rifle platform.