[naveen99]

by the US, I guess you mean the federal government. Remember people are actually at various smaller levels. Any sort of rebellion would require organization atleast at the city level. Cities have police forces, some of which have access to firearms, and maybe even a few non-active duty or defecting soldiers. After the federal government puts down uprisings at a few cities, they might get whole states defecting, if those city dwellers had powerful friends. This is not even considering possible rebellions at outfits like corporations, which are little countries in themselves, which internal economies, surveillance of their employees etc...

But realistically i can't even imagine USA going to war with any major trading partner, much less their own population.

More likely is some corrupt local city government gets ousted by organized people defecting to neighboring towns... again neighboring towns have police / weapons. But you can also just sue cities in state / federal court probably, as they don't have sovereignty. Not to mention elections. So again, i don't really see cities doing anything too stupid to a majority of their own population...

i think the need for weapons will continue to decrease as time goes on and the world economy consolidates more and more... weapons are mostly for sport, just like boxing or mma. Its more of a staged drama...