Let's see now.... police hear that a lady has firearms, enter her home without a warrant, confiscate 13 guns, find out that she owns them all legally... and refuse to return them unless she gets a court order. So she files suit....
Why can't they learn that in a situation like this, give them back immediately and hope things quiet down.
Update: there certainly is a 1983 cause of action here. Entering a residence without a warrant, and probably without probable cause (a report that someone owns guns, where they can be owned legally, hardly gives probable cause), Not to mention seizing property, refusing to give a prompt hearing on its return, and indeed putting the burden on the owner to sue for its return.