Do you have any idea how they managed that trick? If the states are subordinate to the Federal government, how can states infringe on supposedly, federally recognized individual rights, not that they don't try? Has SCOTUS ever made any definitive Second Amendment decision.
See Tenth Amendment.
The BoR limited what the Fedgov could do NOT what the State gov or local could do. There were state-supported churches until well into the 1800s upheld by manditory tithes for example.
In many cases this was a moot point since the states had BoRs in their own constitutions which spoke to the same rights.