I think the gun provisions have not. For starters it's crazy to think that a militia equipped with a stock pile of firearms can overtake a intrusive government with tanks, choppers etc. It's just not realistic.
Guns were much more important for protection back then. There were parts of the country that were the frontier with no policing ability. Nowadays places around the world when gun ownership is substantially restricted are generally safer places. Just google Australasia before and after.
Gun ownership as touted by constitutional nuts is an idea that had it's time come. Sadly, I think give the political climate a amendment that could fix this (put in wording that lets the government legislate gun ownership) is untenable.