That’s what the guy said,firing out of battery. Of course once he mentioned it he was using reloads, FN said it voided the warranty and he was at fault. He should have kept his mouth shut. I didn’t know there were several cases of it firing out of battery. I saw a picture of the one I am referring to and it blew up in his hand.
It’s not hard to check - go find a FiveSeveN, unload it, pull the slide back about an eighth to a quarter inch and pull the trigger. There’s a pretty good chance you’re going to hear what one person once described to me as “a deafening click”. Three out of the five that I’ve gotten my hands on did.