They're now a prohib firearm and you have to have had one of that class since the inception of the concept. I sold all my firearms in that class,(12 class) and now can't have any of them, converted autos, autos, small handguns of .32 or .25 cal, barrel length 105mm or less. I could have one as long as the barrel has been made from new stock and is over 105mm, or about 4-1/4 in.
I had lots of that stuff past... No, there aren't too many any more either. The really nice ones are in collections.