I was an RAF cadet and had to go through rigourous training including how to strip and clean a weapon and all kinds of info about it then be examined both practically and information wise by a qualified training instructor before I was allowed to get near a gun with live rounds.
Even then I could only shoot supervised on MOD property, lying down on a proper range, safety drill, ammo counted in and out etc...
To let a young child anywhere near a gun, let alone to play with it is just crazy.