The Streamlight 89024 ProTac Rail Mount 1L-X is an advanced tactical light designed for short-barreled rifles, carbines, and submachine guns, ensuring optimal performance in critical situations. With a compact design and robust construction, this multi-fuel light offers superior visibility in low-light environments, perfect for tactical applications. Uses Jack-Cap Tailcap Switch Powered by One SL-B9 Rechargeable Lithium-Ion Battery or One CR123A Battery Gasket-Sealed Glass Lens for Enhanced Durability Includes M-LOK Mount and Pressure Switch for Versatile Setup Elevate your tactical game with the Streamlight ProTac Rail Mount 1L-X, delivering high-performance lighting for your firearm.