Note that "the federation" allowed states to have stricter gun laws until recently when we got a new partisan supreme court that is out of step with the previous 200 years of jurispudence.
The result of United States v. Cruikshank was that southern states were allowed to to prohibit black individuals from owning firearms to defend themselves from the KKK. Not exactly a great example of gun control.
What's also crazy it is that it is also relatively recently that the first amendment was incorporated against states and localities as well.
No chance. For them compliance is the easiest thing in the world to law like that
https://www.nraila.org/articles/20260218/washington-action-a...
https://www.nraila.org/articles/20260112/bans-for-3d-bluepri...