BCM original KMR13 alum/magnesium blend (pre-owned)

Pre-owned in good condition. Exterior of the rail is in very good condition. The rear interior where tbhe handguard goes over the barrel nut shows where it has been installed and removed from a barrel nut that was slightly marred. Will not effect function of the rail and is not visible once installed. The rail will come with new in package barrel nut, screws and anti-rotation tab. These were always one of the lightest rails on the market. It is not as stiff as the newer KMR-A rails but will work well with that in mind