There's a video going around facebook showing a 13 year old boy who, unaccompanied by any adult, is able to go to a gun show and buy a .22 rifle. They show him getting denied buying beer, cigarettes, lottery tickets, and I think, porn, but show him at a gun show buying from a personal dealer. I thought all states required a person to be at least 18 and when I saw it, I thought the gun seller broke the law selling the kid the gun. Am I wrong? Is there any state where it's legal for a minor to buy a gun?