Reinforced polymer mount clamps around the front sight/gas block to hold a compact, hand-held flashlight as a weapon light. Open design allows easy access to the tail cap switch to operate the light. Tough, yet lightweight, polymer construction resists impact and withstands the extreme heat of the gas block after sustained fire. Available with low-profile retaining screw for light or easy-to-grasp, quick-release thumbscrew that allows rapid installation or removal of the light. No gunsmithing required.