You should watch the PBS show call "Constitution USA". Not everyone in America agrees on the "true" meaning of the Bill of Rights. As the host travel the US, there are different views on what constitute constitutional "rights" in different areas and times. The episode on the 2nd Amendment was very interesting.
There are gun owners who believe the federal government should stay away from any gun control legislation. But they get frustrated if another person in another area (ie, state/county/city) doesn't share the same view as them. Go figure!
I understand there are different interpretations. The people who signed them had different interpretations as well. Of course, at the time it was common for the general militia to muster in public, so I don't see where it would have possibly been outside the realm of the imagination for someone to openly carry a loaded pistol.
As far as the state's rights issue, there are certain rights that should be incorporated and the states should have to respect. For example, the state can't allow a business to deny service to blacks. Just like the right of association, freedom of speech, and freedom of religion, the right to keep and bear arms should be protected from both state and federal governments.
If some states don't want it, they should move to have it repealed.