The SureFire X300 Ultra WeaponLight for handguns and long guns features a high-performance LED that generates 500 lumens of stunning white light focused by a Total Internal Reflection (TIR) lens to produce a tight beam with extended reach and significant surround light for peripheral vision. The X300 Ultra is activated via ambidextrous switching located at the rear of the body, providing one-finger control. The switch can be pressed on either side for momentary-on activation and flipped up or down for constant-on activation. The X300 Ultra can be attached to a pistol or a long gun since its Rail-Lock system permits rapid attachment to and removal from Universal and Picatinny rails. Its high-strength aerospace aluminum body is Mil-Spec hard-anodized for superior toughness, and it is O-ring and gasket-sealed for weatherproofing.