I need some help with this new malfunction, as in causes and how to fix it. Today at the range, half way through a magazine, I would pull the trigger and nothing. So, when I drop the mag it falls free, as well as a loose cartridge. After this happened several times, I finally left the magazine in and slowly pulled the slide back to see if I could get a look at what was happening. Of course, empty chamber. But, what's really throwing me for a loop is that I could see a round upside down, primer up, in the magazine. As I pulled the slide back further the round was ejected out by the magazine spring tension and the next round was in normal feeding position. Any ideas guys?