I required a smith & wesson 32 cal 6 shot small handle pistol... you have to pull the trigger to fire its not double action or single action. The cyl locks in place under the top site. The serial no is 3641 and the first pat's is march 27, 94 and may 22,94 I see no model on it at all... any idea of its age my father once told me when his uncle newt died it was laying on his kitchen table down by the brozos river in Texas my dad died in 2004 he was 83. And he had this pistol all my life I am 60