The powerful, virtually indestructible X300 Ultra WeaponLight was primarily designed for handguns but is also excellent for long guns and mounts securely to MIL-STD 1913 rail-equipped rifles via its newly enhanced T-slot mounting system. This top-selling WeaponLight features a high-performance LED that generates 600 lumens of stunning white light that?s focused by a Total Internal Reflection (TIR) lens to produce a high-intensity beam with extended range yet it provides significant surround light for peripheral vision in close quarters. The highly efficient virtually failure-proof LED generates tactical-level light-ideal for close- to long-range target identification-for 1.5 hours per set of batteries. Activating the X300 Ultra is done via intuitive, ambidextrous switches-now wider and shorter for improved ergonomics-at the rear of the body. Simply press the switch on either side for momentary-on activation or flip up or down for constant-on activation. Optional DG grip switches (for handguns) and pressure-activated XT tape switches (for long guns) permit the X300 Ultra to be activated remotely. The X300 Ultra can be securely attached to a handgun or a long gun via its new and improved T-slot mounting system. Universal and Picatinny crossbar wedges are included for simple, foolproof installation. Its high-strength aerospace aluminum body-including the mounting system-is Mil-Spec hard anodized for superior toughness and it is O-ring sealed, making it weatherproof. FITS: The new T-slot mounting system fits most railed handguns (and rail-equipped long guns) but adapter mounts are available for some non-railed handguns..