On Fri, 14 Nov 2014 14:20:04 -0500, "Mr. Luddite"
wrote:

I don't think private sellers at gun shows or anywhere for that matter
are criminals by nature, looking to break any laws. They may not have
even known that the state law to check ID's existed. They are gun nuts,
not professional dealers.

===

You can be sure that anyone with a booth at a gun show has been
advised of their legal obligations and has signed a statement
acknowledging those obligations. The organizers take care of such
things to protect themselves from legal action.