One of the less pleasant aspects of a stint as my department's liaison to ATF over 30 years ago was visiting an out of business dealer who had 20-30 years of records in his garage. I would get a call from ATF with the details and he and I would wade through the records, collect the information and notify ATF. Eventually he tired of this game and said if ATF wanted information from his records they could come and get them. They did.

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I need ammo, not a ride.