I met a buddy at the local indoor range today and decided to bring my two boys, 9 and 11, with me. They had never shot before so this was a genuine treat for them.
They got to put rounds through my GP100, P365, Shadow, PCR, and P01. They both did excellent and followed safety protocols appropriately. I was surprised children that young were allowed. They don't have an age limit, but you have to be taller than 48" and accompanied by a parenting adult.
My 11 year old shocked us all as he emptied the Shadow into nice groups at 10 yards. He shot better than any other newbie I have been with. My 9 year old held his own but the smaller 9mm platforms were a bit much for him.
They both loved the GP100 with very mild target loads, and my oldest also enjoyed the Sig because of how jumpy it was compared to the larger frames.
I was able to buy 3 boxes of good 9mm target ammo there for $20/box so I didn't have to put too much of a dent into my personal supply, which is rather limited.