My original thought was in error as this(Essex) is an existing weapon that was not registered under the provisions of the GCA of 1934.
However it is certainly possible to build and register a "smooth bore pistol" today. I just turned down the opportunity to buy a registered Remington 870 with a barrel under 18" that was built with a pistol grip rather than a conventional stock. The cost for the transfer,as stated above, was $5.00 plus the paperwork.
I'm sure I'm not the only one that can see the irony if not the stupidity here. You can't register a short barrel pistol because it wasn't originally registered but you can build a brand new registered one.
Jim
