Occasionally, I'll frequent a pawn shop or two just to see if there are any real bargains to be had or if I can sell something that will render a good price (most times, it usually doesn't).

I did happen to sell an item the other day, and, of course, they make you fill out the forms (same form for either a sale or pawn, etc.), for which you have to provide a thumb print. The shop mgr. saw me "roll" the thumb print and said, "Sorry, I need you do do that again (on a new form). Just push down, and don't roll. We've had problems lately when the police come to audit us... they get upset when we have bad thumb prints..."
And After thinking about this, I asked, "Are you telling me that LE gets to see these forms?" He said, "Absolutely they do. With the volume of business we do, we get audited regularly." Apparently, all items traded through pawn shops are subject to audit by LE to prevent against trading in "hot" merchandise.
It seems to make sense, but then I thought, "what of people who trade/pawn firearms through such a pawn shop?" The forms completed list name, address, DL#, SS#, and, each item, line by line, including make, model and serial #. If LE has access to and can record those forms, is that not a form of "registration" similar to when the ATF comes in and captures an FFL's 4473 book? Is it usually local LE or FDLE, or the feds that come in to do these audits?
Big deal or not?