FMK Firearms

Product of the USA out of a patented composite polymer with a strong resistance to impact. This cutting-edge polymer offers unprecedented strength and durability in a lightweight package. There is no composite polymer lower on the market today that can compare in strength to the Ar1 eXtreme. The lower receiver of an AR15 is the platform upon which the rest of the rifle rests. The Ar1 eXtreme has a lifetime guarantee and, of course, is Made in the USA.

fmk firearms

AR-1 Lower Specifications

• Manufacturer: FMK Firearms
• Manufacturer Part #: FMKGAR1EBRT
• Model: AR-1
• Action: Semi-automatic
• Type: Stripped Lower Receiver
• Caliber: 556NATO
• Caliber: 223 Remington
• Barrel Length: N/A
• Color: Burnt Bronze
• Finish: Matte