There will be no confiscation. This would be insane. There is still a second amendment which they will and have to respect, even Obama, Biden, Bloomberg, Feinstein, etc. know that there is now way around it. There is just too much resistance from every side. They know that they are done if something like this would pass which is impossible at this time, maybe in a 100 years when humanity reaches a new stage of consciousness or something. We won't even see an new AWB ban.
But, I am sure we will see something. Probably some minor gun law restrictions/changes. The left thinks that they have to do something after those horrible incidents, they have to make the left happy with something, that way they can jump up and down for a few minutes and open a bottle of shampain or something.
They are too lazy and too unintelligent to work on the real problem. They just want to see us hand over our assoult weapons, which are no assoult weapons. But they won't because we and the founding fathers are still too strong.