Idk I need to get insurance for my car because it might hurt someone. I think this makes sense and is a good step. You have a right to own guns but no one said it would be cheap.
This brings up a whole other tangent that I'll ignore for now (the necessity of needing a car and it not being a right, and having to pay for it) -- but a dangerous item/toy etc and a gun, i.e. a fundamantal means of self defense, should be treated differently by law in a country that claims to be free.