Make sure that it's reported to your local and state police... Might appear at a pawn shop of on backpage.com
good advice in case it ends up being used in a crime too..
I had a revolver stolen years ago, pretty sure I knew where it went but couldnt prove it.. I ended up filing a report and getting a "case number" so authorities would know I reported it lost/stolen.
..never did get that revolver back....
dave