I am in a local shooting league and the other day got done shooting my stage and they usualy say "slide back" "clear chamber" "slide and trigger" and well when I dry fired it the dam slide came sliding off. The slide leaver on the slide that you use to remove the slide some how fliped up and that is how the dam slide came off. I have no idea how this happened being that the leaver is kinda hard to flip up anyways. Any one know why this happened and if it has ever happened to you. XD-40 V10 over 2,500 rounds through it. By the way some old man asked what kinda gun is it I replied springfield xd he says "well that explains why" he shoots a kimber!