And then on TOP of that, add in another core human desire to imitate role models and play make believe, plus the ubiquity of guns used by heroes in half of our media and stories, and you have yet another deep urge to play with guns when encountered.
Yeah, that's why you shouldn't make guns fun playtime. You figured out the issue.
Also safeties and, y'know, unloading the gorram gun. Curiosity and idle hands isn't going to pick 2-3 different locks and figure out how to load a smg. The one that should be actively under lock and key unless being used. Probably well out of the reach of anyone as young as the kid in question.
And yeah, just from the strict simple safety angle, as per andrea's line of thinking, what happened here was
incredibly fucking stupid. You don't put a semi-auto or auto in the hands of someone you aren't incredibly damned sure can handle the recoil. Hint: That means no pre-teens, gorram
period. If the instructor wasn't
dead, they would be in a position were they should be losing their goddamn job. Certainly if the laws were even remotely sane the business this happened under the preview of would be shut down for a while, pending investigation, further training for the owners and instructors, and general review.