ProTac Rail Mount 1L-X redefines tactical lighting with its compact and versatile design. This high-output light is engineered for optimal performance on short-barreled rifles, carbines, and submachine guns. Powered by either a rechargeable Streamlight SL-B9 lithium-ion battery or a standard CR123A battery, it provides exceptional lumen output ensuring maximum visibility in low-light conditions. Uses Jack-Cap Tailcap Switch Compatible with SL-B9 or CR123A Battery Gasket-Sealed Glass Lens for ultimate durability Includes M-LOK Mount and Pressure Switch for flexibility Optimize your tactical advantage with the reliable and efficient ProTac Rail Mount 1L-X.