The way that I gunproof my kids was, I made them a deal. They could see any gun, at any time..if they asked first. Plus, they had to be able to recite the four rules of gun safety, which are;
1. All guns are always considered loaded.
2. Don't let the muzzle cover anything that you're not willing to destroy.
3. Keep your finger off the trigger until the sights are on the target.
4. Be sure of your target, and what is beyond it.
For some strange reason that I still can't figure out, (lol), they always wanted to see guns at bedtime.
I can't count how many times that I put the card game with friends on hold, to go show the kids a gun. They were doin what kids do, try'na stay up later...but I wanted to keep my word so bit my tongue and did it.
I'd always go through a big dramatic, let's make sure there's no bullets in it spiel, and check it, reiterating what and why etc.,
To demonstrate the guns destructive power, I'd let them shoot shaken up cans of soda pop. Then get the split can and give it to them with the admonition, fix it-make it better...This is real, this isn't tv! This is what would happen to mommy or your brother if you shot them, So Don't!! And stuff like that.
It worked. Praise the Lord. My kids are punks now, but not punks with guns.