I'm just looking for you to justify your point, which apparently you can't.
I get the primary functions of each item. When used in a way to illegally harm someone through intention or neglect, either item is being used inappropriately. When used as a defensive weapon, a gun is not being used illegally - and we have laws that establish proper and improper use of the weapon.
If you can justify your point, please do. If not, please admit that.
Inappropriately how? According to the manufacturers guide? See if you can answer this very simple question. If person A shoots person B with a handgun and person B is then harmed, did the handgun preform as the manufacturer intended it to?