I was just thinking out loud but who's to know they changed ownership.
Here's what you have to keep in mind.
Every day there are people who are minding their own business, and they get busted for something. Your brake light is out. Some fool rear ends you at a stoplight. Someone breaks out the window in your car, and you file a police report. YOU weren't really doing anything, BUT that little bit of weed under the seat becomes your problem.
Same thing with a gun. It's gets stolen, or you get in an accident, or stopped for a traffic violation, and all of sudden where it came from becomes an issue.
There are all sorts of things you can shortcut, but it's the risk/reward equation, not the actual commission of the act that you have to consider. Probably everyone here speeds some, but they are willing to accept the risk, because even in the worse case, it's only going to affect your insurance for 3 years.
There is a regular booth selling guns at a local flea market. The Jockey Lot in Anderson has more guns for sale than some gun stores. Personally, I can't bring myself to buy guns that way, not the least because most of them look like they have been drug behind a truck, and all those guys know is "Blue Book". Obviously not every one feels that way because those guys are there every weekend.
I digress but what scares me about the flea market sellers is their shtick. They will have a half to a full dozen guns on their table, usually cheap ones in bad condition. But if you act real interested, or ask about a specific gun, they always have a few "back in the truck." I'm at the stage of life that I just don't want to mess with the potential consequences of buying a gun "out of truck." The $50 you might save isn't worth it.