Quoted:
Was reading Reddit, where a poster mentioned his guns were seized by police after his apartment was raided by the police on suspicion on drugs. There was a post on how to get the guns back, but it centered around receipts.
What happens if you don't have a receipt (i.e., the guns were a gift from a deceased relative who may have in turn bought them in a private sale, or you bought the gun in a private party sale)?
You do have a receipt (or should) if the police take property from you. They give it to you. It will also be on the return/inventory prepared for a search warrant which details everything they took.
If that happened to me, I'd file a warrant in detinue and name the individual officer(s) and the city/county as defendants, set a date, and make them come explain to a judge why they took my property and won't return it.