The first one had a problem with the dot size. It would start out small but as the laser warmed up or over a few minutes of useage, the dot was the size of a quarter at 25 yards. I call Laserlyte and told me to ship it back. They got it and told me there was nothing wrong with it?? She said the dot size was fine?? They sent me a new one and this one isn't much better than the other one. The dot size is small up to about 30 feet and then it just flares out. Not a great sighter.