Never shot one but my buddy is an instructor and says he's seen a ton of failures of all kinds and from various guns in his classes. He said the funniest one he saw was a guy getting his CCW with a Hi-Point. He's never been a fan, but danged if it wasn't working flawlessly the whole day and commented on it to the student. At the end of the day when they were doing their actual qualification to finish, the guy steps up to the line, and halfway through his string of fire the slide flew forward and onto the ground. The student looks up and says, "If I was in spitting distance, I might have knocked the wind out of him with that shot". They laughed about it and he borrowed a gun to finish off his qualification.