In my house both growing up and for my son, we did not play with guns, ever. We have real guns that are not toys. We feel that toys and sports are the development ground for life; so pointing/shooting a toy gun at a person is never permitted.
I think it worked out okay as my son, as a teen, became a 2x all-American in shotgun.
Every family is different. Every child is unique. No slam here.
My father also did not allow toy guns. We got BB guns and had to take NRA firearms training in 3rd or 4th grade. We were taken hunting often and had to obey strict rules at handling the BB guns. I think around 5th grade we got .22s and single-shot shotguns.
Yes, we did cheat and use toy guns occasionally with friends.