If this were to happen again, what can you do? When you have LE on the doorstep armed and demanding your firearms what do you do?
A friend of mine who has been active in the cause for many years suggests we all have a "throw away" gun, or perhaps in this case a "surrender gun." If you don't already have one, get yourself an old Papa-Oscar-Sierra from a pawn shop, or at the discount table at a gun show. It doesn't even have to work. When Ray Nagan's Storm Troopers show up at your door, surrender your gun. If in the unlikely event they have a stack of 4473 forms, try something like; "Gee officer, I sold those years ago, all except my favorite antique gun here. Do you really have to take it?"
I think I could convince them I am really upset about giving up my only gun, a family heirloom and by-the-way, "I want a receipt."
I have such a gun, a 1908 Iver Johnson, 8 shot .22 revolver. It was a gift about 35 or so years ago, and it still shoots well. If I had to sacrifice one of my guns, this would be the one.
(http://i204.photobucket.com/albums/bb294/pioneer461/Pistols/Guns021.jpg)