We have significantly more than the number you stated.
The vast majority of States have no “weapons registration” requirements for mere ownership of a large variety of guns and ammo.
We aim to keep it that way....
In Michigan we have concealed carry with a permit, open carry without a permit and no registration on any long guns. We also have a good stand your ground law.
I can’t remember the last time there was a mass shooting in Michigan that wasn’t part of another crime or gang thing.