It’s likely in some {badges} private collection.
I got my Brother’s revolver less than a year after he used it to end his life. When the incident occurred, I received a card from the top guy in the Denver PD investigation team saying to call him if there’s any issues. They ended up calling me early and I picked it up that week.
Granted, that wasn’t a crime. However, theft is.
Go to the station and get written statements from everyone you can giving a reason why they have your property.
Then go in again the next week.
Then the following week.
Ride their butts.
This is theft.
Best of luck, FRiend.
You do not want that gun back. The serial number of that gun will forever be in numerous databases, and will never be “cleared”.
I would think a small claims filing might work.
If that fails, sue and include the lawyers fees to be reimbursed.