An interesting post from TFL. Hard to say how the live one got there, maybe a fool playing games. But it was worth passing on the reminder.
I was at a large retail chain that sells firearms(won't mention the name) and I was looking at some Sigs. I asked the clerk behind the counter if I could look at a certified pre-owned Sig 229 9mm. He picked up the gun from the display case, racked the slide to check it, and a live 9mm fmj came flying out and landed on the counter! We were both pretty suprised, and had he not have checked the gun first, I always check the chamber on any gun that is handed to me, even if I just watched somebody do it.
Somebody goofed up at Sig. That is the first time I have ever had a gun in a store eject a live round. Just goes to show you, treat a gun as if it is ALWAYS LOADED.