These are ex-post-facto confiscations, and may be triggered by someone "deemed" mentally unstable.
Some California Pols say it hasn't gone far enough:
Now, New York and NYC in particular:
As far as any general confiscation buzz, hit up nearly any RTKBA board, and you'll hear stories about "tragic boating accidents" in which all a persons guns were. . . "lost". . .
I realize, that as an outspoken Conservative, here on BoingBoing, my opinions don't generally fit into the groupthink of the vast majority of Happy Mutants, but I will state that I think that any general attempt at gun confiscation will not go well. . .