Who's to say OP didn't show him.... You can lead a horse to water, but you can't make it drink.. Maybe MR. Gunsmoke chose his own way..clearly not OP's fault

I never said it was OP's fault, in fact, I specifically said it wasn't. Guns being handled improperly can be dangerous, so if they did inform him, I was wondering how much, or if, they really drilled it into his mind the consequences that can occur if a gun is misused. Especially telling him that he cannot only hurt himself severely, but other people. He might have just ignored it and went his own way, but given that it was his first time, I questioned whether it was a lack of training, which is a completely relevant thing to question. Like I said, I'm totally ignorant when it comes to firearms, never even handled one and don't want to either, but even I know you don't shoot one with one hand, unless you're either ignorant to how they work, or just being stupid.