Location: Hamden, Connecticut

Perhaps one of the most unusual firearms to have been designed and marketed in the United States during the 20th century. It utilizes a "tround" which is a triangular plastic case enclosing a cartridge. Action of these arms consists of a revolving carrier that brings the trounds from the magazine into line with the barrel. Discontinued in 1962. Values below are for boxed examples, with a supply of tround ammunition. Deduct 50 to 75 percent for un-boxed loose examples, without ammunition.