Ha. From what I understand for the gun part, if I have a license for it, then I can attach it to the vehicle (must have an orange nozzle cover-thingy).
And I think for the age part, it's either 16 or 18, or there must be an adult (18) accompanying the child or juvenile. But I know the fuzz will call me out on both.
Oh, the pics... I have a few.