One of the beautys of the system in UK is if , for instantce clearing out Grandad's loft, you come across something that is illegal, and you'd be suprised how many Enfeild revolvers turn up, to hand them in. Either through a Registered firearms dealer, who will put it down 'Handed in by person unkown', or to a Police Station, but in that case better to phone for an appointment. The idea is get unlicensed stuff of the strreets before it goes onto the black market. Catch criminals not persecute the innocent. Most sensible dealears will help you get a find de-ac'ed should you wish..