I agree with Stinky but lay the blame even more strongly on the parent.

What NORMAL parent would want their child ANYWHERE NEAR such a weapon, much less "Hey Son, Lets go shoot an automatic machine gun." There is is the problem right there.

The laws are ridiculous of course (allowing a child to handle such a weapon at ALL) and I love Stinskers point that if the human race cannot show common sense (which really seems to be true these days imo....people are getting more and more isolated within their own little worlds) the government will indeed have to do it for us.