Police officers are quick to seize firearms whenever they make an arrest or execute a search warrant. Afterwards, they don’t want to give them back.  Frequently the reason given is that the person is now a felon so he cannot have possession of or transfer ownership of the firearm.  The Supreme Court of the United States ruled in May that the owner of the weapons can get a court order directing that the weapons be turned over to a firearms dealer for sale on the open market.  Henderson v. U.S., 135 S. Ct. 1780 (2015).