Going door-to-door is unlikely. They will hit one place, then another elsewhere in town, then come back later. Resisters will be dealt with violently and possibly WACO'd to provide examples of what happens to those who defy the state and cow all but the most ardent resister into submission.
Searches (they won't take an "I sold it" at face value) will destroy the homes and property of those who do not hand over arms, and anything of value will be looted as well.
Mark my words. This is an illegal and unConstitutional act.
They do that raiding stuff piecemeal, and pretty soon they’re going to find some coming back the other way. I’m not advocating anything, mind you, just making an educated guess.