If, with the stroke of a pen, the government issues a 'turn 'em in or go to jail order' and thereby makes the gun owners 'criminals' the exceeding majority will surrender their arms meekly.
In a nation where every gas pump has a security camera pointed at it, where money is digital, were the citizens must have ID on their person at all times by law, where access to bridges, interstate highways, public transportation is controlled and or closely monitored, resistance is futile.
Most people, facing a choice of carrying on with their comfortable lives unarmed or becoming a felon by resisting will simply fold. The average guy, with a mortgage, a wife, kids and a job will not use that weapon to resist [/i]and thereby 'throw everything away' when faced with the final choice. They will surrender their arms.
We're just about there now... and all bluster aside... reality bites.