interesting.. as i said, i felt like i was missing something. would not have assumed that just saying i sold it was enough proof to no longer be of interest to the cops. thanks for sharing what happened to you.they won't ask for proof because it's not required. When the atf showed up at my house looking for a gun I sold, the scenario you described is pretty much exactly how it went. Though they wouldn't tell me if anyone was killed or if it was used in a crime. Just that "it had turned up in..."