“Pinto” is a name given to a specific sort of Smith & Wesson revolver by collectors. It refers to guns - typically J-, K-, and N-frame revolvers but all some semiauto pistols - produced with a mix of blued and nickeled parts. The name derives from the Pinto horse, which has patches of white and color. The guns were generally old as a way to use up excess parts from different production runs, but they have acquired a niche collector interest.