Hide them in the back yard, go to the police station and report that they were stolen. Then, you’ve got them when the thugs come to take them away unsuspecting trouble.
Sorry, Obama Scutzstaffel, I was out on the lake and well, you know, things happen. All firearms were lost.
Oh, that gun safe in my office? It holds my personal papers.
You can't open it without violating the 4th amendment. Sorry.
Secure in our papers and all that...