So you're convinced now that the FBI couldn't figure out that you were at work, or out fishing, or whatever, when the robbery occurred without your trusty BOS?
How did the FBI know that you didn't dummy up the BOS between the bank robbery and when the agent showed up. Unless it was notarized or filed in an official registry, it's just a piece of paper of unknown vintage.
The gun was sold in Tampa FL, the bank was robbed in Chicago, it was about a year between sale and crime. All I know is when I handed over the BOS, it ended my involvement with the whole thing. And I was happy I had it.