Fed collusion?
You mean that nasty little 4473 you fill out each time to purchase a firearm? Why the BATF wouldn’t be retaining those in a database, that is against the law! And some laws are more important than others and some cannot even be enforced just ask Attorney General Holdup.
The moral of the story, never ever register your guns. And those I had oh they fell in the ocean on a fishing trip or I sold them to someone at an evil gun show in the parking lot and I didn’t get a name, so sorry.