As a 17 yr old who's "dad" owns a spikes tactical AR 15, an American flag coated glock 19, and a .22 rifle I'd say sell to an 18 yr old after meeting them in person and doing a personality assessment. I'm 17, I started a holster making business, I taught my girlfriend, her parents and my parents how to shoot, and I am a sophomore at UNG getting a criminal justice degree. Some of us are capable of handling the responsibility, and therefore you shouldn't let age define how you treat the sale of a gun. For instance, at 21 you can legally start drinking... why is that the best time to get a gun again? I believe that I should have the right when I turn 18 next weekend to carry a handgun concealed to defend myself, it is my right as an American.Another big reason not to sell to an 18 YO is because we were all 18 once and we know what happens at 18.