[tarcone]

I dont think we are talking something small like a branch-davidian thing. This would be the government imposing their will and subjugating the masses. This type of thing is what the 2A was set up to fight. As CU said, 100% of the military would not be onboard.
And I imagine the leadership of the military that was against the government, if this happened, would have plenty of support from the masses to bear arms against the government.
You would also have pockets of resistance throughout the land. That would perform guerilla warfare against the military.
Counter insurgency is a losing game. It never goes away.

Take guns away from everyome and things just got a lot easier.