US armed forces personnel = about 600,000
US armed civilians = about 90,000,000
An estimated 15,000 armed 'insurgents' embroiled the superior forces of the US military in Iraq for nearly a decade. Our forces retired from that war without achieving a confirmed victory. The same thing occurred in Vietnam, forty years ago.
Even if nine out of ten armed Americans were to lay down or give up their arms, the US military would conceivably be faced with quelling a force of 9,000,000 angry and determined people who would be fighting for their country, their property, their rights, their families, and everything that makes life dear and precious to them.
That is without question, the largest, most determined armed force on the planet.
There would also be mass defections, refusal of orders, and mutiny within the ranks of the federals, which would thoroughly decimate the their ability to wage war upon their own citizens.
Don't think they haven't war gamed this scenario out long ago, and found that they cannot defeat us.
I pray you are right, but there is no organized opposing fighting force in the civilian population. Ask yourself how other tyrants have quelled the masses? Why does everyone assume it can’t happen here—the historical record does not support that position. The first step will be to drain the bank account of those not complying—this is all done electronically by the IRS. God help us.
The only way to defeat the armed American populace would be to nuke them from orbit.
Also worth noting are all the inactive reserve, retired military, DOD, civilian contractors, etc... who are more than capable of operating modern military hardware from tanks to helicopters, to fighter aircraft that would fight against an illegal and tyrannical government that attempted to throw out the Constitution and enslave the people. If the government openly ever attempted to disarm this country it would not be an insurgent war but an open and strategic civil war as loyalties forced everyone to chose sides no different than in 1860. It would be beyond foolish for any government to force the 2nd Amendment to be the catalyst for the Civil War II.