The story is an 8-year-old was trying a submachine gun under supervision at a legal firing range at a gun show. He lost control of the weapon, the recoil pulled the muzzle toward his head, and, well... Threat title. No word on which weapon it was, whether or not he was using a stock, or if it was set to burst/auto, etc. The article calls it an "Uzi" but who knows if that's accurate. I mean, some sources are already calling it a "machine gun."
I'm kind of wondering how they really expected a small child to be able to handle the kick of an automatic weapon. I'll let our resident gun experts take it from here.