1: The Citizens of each State shall be entitled to all Privileges and Immunities of Citizens in the several States.
IMO,this should be grounds for voiding all state firearm laws that are more restrictive than those in the “free” states.
You misread the clause. It entitles non-citizens to the same liberties as the citizens of a state. But the founders were clear that it did not over-ride the laws on the citizens by the state.
IOW, non-residents of a state are treated as residents of the state they are visiting and subject to those same laws.