Maybe I'm not understanding your example. Am I correct in saying that purchasing a firearm through a FFL is the only way the JBFs know Peter has any guns in the first place?
And there are millions of them. It is more likely that firearm owners will be turned in by neighbors, co-workers, and relatives than searching the 4473 records.
Umm... The drone above you (DON'T LOOK NOW!) can see them under your coat and track you using your cellphones GPS!
http://gunssavelives.net/blog/creepy...k-cell-phones/
Well lets hope we dont have to find out. I will point you to history though and just say that more than a few revenue agents went back into the hollows of TN looking for my relatives to confiscate various things and never came back. Not the first time in the history of this country has the government done something monumentally stupid and had to be reminded gently not to do it again.