They definitely know what ones I bought FROM DEALERS and the CMP in the last 20 years. Not those I traded for, person to person.
They probably have a huge list of those I used to own but no longer have that I traded off since 1968.
Everyone should inventory their firearms to see which ones DO NOT have a paper trail.
> Everyone should inventory their firearms to see which ones DO NOT have a paper trail.
Luckily (?) my collection is small enough that I know which ones were purchased through a retailer.
I know that little revolver with the friction tape on the grip definitely does NOT have a paper trail.