So I am a firearms instructor as well. My oldest who is six goes with me to the tactical range and shoot house a lot. I basically have thought him nomenclature of a glock. He can strip it, clean it, and put it all back together again. He has his own that has a barrel blank in it. We work, wide angle, quick peeks, Pieing corners, carrying in sul, punching out, drawing from low ready and from holsters. We work trigger control with an empty gun. He understands about the seriousness of guns. He drops the mag, cycles multiple times, visually and manually inspects the weapon before ever working with it. I have beat it in to him so much he does it in his sleep. He is only allowed to touch guns when I’m present. He is a pretty good shot. He was allowed to go hot on his 6th birthday. We love it.