In this hypothetical situation, what would you do?

So the United States Government for some odd reason passes a law that says all guns are illegal, and people will arrive promptly at your house to take your guns away. Let's just throw out how the odds of this happening are so low that it's pretty much completely irrelevant. I know many of you hold the ideal that you will never give up your firearm, and that you will just shoot whoever they send. But let's say this, they roll a tank in front of your house, and aim its gun at your front door. What would you do then? It can roll right over your house, or just blow the crap out of it. They give you an ultimatum. Give up your guns, or get blow'd up. What would you do? Would you still hold onto your gun facing certain death? Would you still be like "Give me the second amendment or give me death!"? Or would you comply?

Basically what I'm asking is if your life is more valuable than your ideal.

Throw everything else away in this argument, no slippery slope or anything, just say the government wants your guns, and nothing else.

This is all hypothetical, as I do not support taking away guns, even though I support the restriction of sale. I am simply interested in your belief in this, and how far that belief goes.