Well, I might have agreed that no four-year-old ought to operate a twelve-gauge shotgun...it’d probably break his arm.
Yep - my Dad bought me my first Daisy BB gun when I was 4. Had to bring in a sawhorse for me to rest it on so he could teach me to sight. By 5 I was doing same with an old Marlin .22. 57 years later and the lessons I started learning at an early age have served me well.