As the OP, I ask you this:
Can you name 10 times in history where a government began using its military against its own citizens, and that military intervention was to the benefit of the citizens?
I cannot think of one. There are only three outcomes (or a mixture of 2 or more of the three) in history:
1 the military is used to oppress the citizens
2 the military is rendered useless for its primary mission of defending the citizens from external threats, as it becomes preoccupied with the interior mission
3 the military initiates a coup, and takes over
I think this is very germane to firearms, since we have an incoming administration that is for "common sense gun laws" and is in possession of a tool box full of the Patriot Act, military forces that can be used civilly, and a host of other powers that were created during the GWOT.