Colt Canada C7/C8 Armorers Wrench, Receiver Extension Nut Details

C7/C8 receiver extension nut armorers wrench. THE correct tool to remove and re-tighten to spec the receiver extension nut found on all Diemaco/Colt Canada rifles. Made from AISI 1045 steel then heat treated to 50-55 rockwell per specs. Item Nr.: 120-CF62420A Please note, on Diemaco/Colt Canada rifles, the receiver extension nuts are staked to the receiver extension plate. We recommend first using a small flat punch to eliminate the staking before trying to remove the nut. Failure to do this can result in damage to the tool and or the extension nut. As with any tool, improper use can result in damage!