I agree with that. It shouldn't take a law to keep you from letting a nine-year-old shoot an uzi. This should be evidence enough for those that were on the fence about it for some reason.
Well, I would say that age is part of the equation. I'm sure that I could get my 6yo nephew to be able to physically handle an uzi, but I couldn't ever feel confident in his mental ability to handle one safely. Age isn't a perfect proxy for mental development, but it can definitely be a limiting factor.
I completely agree brother. My son has a difficult enough time dealing with his little sister singing "Let it Go" for more than 60 seconds. He can hardly make the choice to ask her to stop once politely before having an emotional breakdown. Heaven forbid he hold a weapon while in the same state of mind.