As late as 2000 I would have said no, that they would fight. Today, 2015 , other than a few that the Government will make examples of, the majority will surrender. Give the Government about 5 more years to get more people on anti depressants, feminize the males more, and the Government won't have to confiscate them. The civilians will voluntarily surrender them.
Intangible factors: Many people who still retain their firearms have lost most else. Some have lost all they own and resent the people who have caused an environment in which that happened. A man who has nothing to lose will fight.
It is the fat and happy who have something who are disinclined to risk it.
Kids nowadays may catch a lot of flack for being college grads with a head full of mush. Some are, but from those who graduated well in a decent field who have been edged out by diversity or other policies, this is a situation to rebel against.
For those stuck in grandma's basement trying to pay off student loans in a crappy job who just can't connect to one in the field they chose, they got a raw deal, and it doesn't take long to figure out who dealt them a crappy hand. It doesn't take long to see through the hypocrisy of those who told them a line of crap about how wonderful that new world order was going to be.
You see, the problem is that the Socialists can only sell rebellion and appeal to the 'rebellious youth' when they are not the ones making the policies the youth rebel against.
The Socialists have become the de facto "Establishment".
They are the status quo kids rebel against.
Tell those youngsters they can't have something and watch and see what they try hardest to get first...and then they will do their darndest to keep it.
While there are certainly some who will surrender their weapons, and there are certainly those who will inform on other citizens (I know some of these types), let me remind you of the record firearm and ammunition sales that have occurred in this country since the current administration took control. Many of these weapons were purchased by people who did not previously own firearms, and every time the Demander in Chief opens his mouth, the numbers continue to rise.
Further, the real economic situation being what it has been (and not the massaged numbers reported by the administration and spread by the compliant media), I would hazard a guess that there is and was no small percentage of those weapons that were purchased at the sacrifice of a more pressing need because of perceived immediate or future requirement. I submit that these people did NOT purchase these weapons, which in many cases represent a significant financial investment, only to meekly turn them over without resistance.