You sir have a more positive feeling about the general public than I.If U.S. soldiers started invading U.S. households and harming Americans and their families, how long would it be until someone started targeting military families in retaliation? I mean, there's a bond between the US military and the US public . . . even people with no military service know someone - a parent, an uncle, a spouse - who served honorably. Break that bond by misusing the military against other Americans, and things would go into a downward spiral rather quickly.
IMO 9,999 out 10,000 would open their doors and meekly comply. The one would just - well - die - alone - painted by the government and the media as a traitor, a criminal, a terrorist or insane. The other 9,999 would nod their heads in agreement and go on about their lives.
Now one might imagine that just the one in 10,000 is quite a few people in a nation of 300,000,000. One would be right. But those that fell into the 1 of 10,000 would be separated by both time and space, without benefit of organization and leadership.
If the day ever comes that confiscation is reality that's how it will be done - 1 at a time - more than likely turned in by a neighbor or friend - by groups of men who blindly follow the orders of those lawfully appointed above them (be they LEO's or the Military) because that's what those kind of men do. It's who they are.
There will always be men who by their nature willingly follow the orders of those above them. Those types gravitate into various professions the most common of which are the military and law enforcement. History abounds with examples of it. The US is not immune. Our day is coming...