The Second Amendment is not “incorporated” and therefore not binding on the several States. That is one of things that the NRA is trying to get changed.
Yes, but state constitutions must be compliant with the federal constitution.
Read the full text of the legislation ratified by the States, they included a passage stating that the BoR would apply as PART of the Constitution upon ratification.
This means that Art 6 Para 2 applies RKBA to the States as much as it was ever needed to. The inclusion, and judicial obfuscation of, the 14th later on set an even worse precedent.
These are OUR Rights as US Citizens regardless of which State we live or work in. Period. Full stop. "Shall not be infringed" is the "Supreme Law of the Land" everywhere the United States Constitution rules.
Everything else is judicial activism, legislative malfeasance, and a travesty of what our Republic was supposed to be.