I bought one and dont care for it. Look at yourself in the mirror, it is one hell of a shoot me now beacon visible much further than it illuminates. You will want to keep it pointed down but your barrel has to follow and it will still reflect from it and throw a shadow. The button sucks, ok with a fingertip but forget mounting where you might want to use a knuckle, for example in front of a vfg. This kind of light should have a mechanical or direct control switch. Low hi off or low wait... off for red. Hold it down for two seconds for the white light-which turns red on or off while you wait. It will keep you from tripping on stuff and it weighs nothing so its not a bad tool if you have spare rail and understand its drawbacks. Illumination level is good for what it is.