And how does one go about making contraband legal? As I understand it, those are smooth-bore pistols and, in the U.S., are in the NFA AOW category. If one is not registered it is contraband. It seems to my non-lawyer mind that it is illegal for someone to possess it, illegal to transfer it to you, illegal for you to possess it, and illegal for you to change or modify it, because that would be tampering with evidence of a federal felony.
Now if one had originally been made with a rifled barrel, and that could be shown in court, then it would not be an AOW, but simply a handgun. But that is not what you seem to be saying.
You can, of course collect them, all you want, just as you can collect registered machineguns. But making unregistered AOW's or SMG's legal by "disarming" them is a new one on me.
Or could it be that if someone were to sell an unregistered AOW to you, he could find himself having a discussion with your co-workers at the BATFE office?
Jim
PS. BATFE has specifically removed the FP-45 Liberator pistol from the purview of the NFA and placed it in the C&R category; AFAIK, that has not been done with any other smooth-bore pistol of that nature.
JK