The more your son handles the weapons, the safer he will become to the point it is second nature.
I agree. All I would add, would be "with proper instruction", and "as soon as possible after birth".
“The enemy is anybody who's going to get you killed, no matter which side he is on.” ― Joseph Heller, Catch-22
Beware of associating with "Cheap" Squirrels. They tend to be very narrow minded, hypocritical, and will gag you if you question or disagree.