yeah, I was trying to work a
shooting blanks reference in. Pardon me while I go polish my ramrod.
Back to the semi-serious ... you don't let four year olds have guns, because they can't be trusted not to misuse them.
Nor five year olds.
Nor six year olds ... (I hope) ...
There is a minimum age*.
I'm just suggesting you increase the minimum age further. Say, 30.
* too lazy to check, but I recall seeing 12 as a minimum age for buying a shotgun in some states.