With the new Safariland Rapid Light System (RLS), you get a professional-quality hand-held light and gun-mounted light all in one. You can clip it onto your belt, hold it in your hand, or quickly mount it to your gun for an instant tactical advantage. There?s no need to buy an expensive holster to carry a light-mounted gun. No reason to carry a second primary light. You will always have a bright light whenever and wherever you need it. It?s the only light you need. Period Ambidextrous  Super-bright LED technology (65 lumens) ? bright enough to be your primary light; Prism Reflector System penetrates light up to 350 feet  3 AAAs provide over 50 hours use?no expensive proprietary batteries needed  Integral clip for easy securement to belt or garment?no dedicated light mount holster needed  Fits most handgun models that incorporate an integral rail system?also mounts to rifles and shotguns that have a picatinny rail  Quickly transitions from standard flashlight to tactical illumination  Can be operated with either thumb, or change to other side to operate with trigger finger; Push button provides controllable on/off illumination of target to minimize loss of handgrip, sight picture and exposure  RLS mount will accommodate any hand-held compact light in the range of .970" (24.6mm) - 1.060" (26.9mm) in diameter