There aren't any.
You are probably correct in your general conclusion that there are too many armed civilians for the Federal government to sustain a campaign of forcible subjugation,
That will not stop the Progressives from trying.
Progressives don't do math. They are grabbing for the gold ring of permanent rule over this country, and with every failure, they simply redouble their efforts. They will continue in this direction until they are removed from any positions of power. And they will not step down voluntarily.
This sort of miscalculation guarentees that events will go badly for everyone. There are plenty of contemporary examples of how this develops. Check the story in Yugoslavia, Venezuela, Bolivia, Argentina, Mexico, Egypt, or Syria for some of the more extreme details.
There is a wealth of learning experiences in those stories. Of course none of that could ever happen here...
"I think they overestimate their chances" (Gen Moff Tarkin).
“That will not stop the Progressives from trying”
Walk into any college classroom and continue walking into any office infested with fat federal bureaucrats, then get back to us on whether or not you’d be comfortable going onto a hostile battlefield with those people.
I look forward to your answer.