The most popular used gun, again, is a much older pistol, but another Colt: the classic .357 Magnum Python. Originally billed as a target revolver, the gun debuted in 1955, and was sometimes called a "Combat Magnum." It shared an introductory year with another classic, the Smith & Wesson Model 29 in .44 Magnum. Built on Colt's I-frame, the Python has a reputation for accuracy, a great trigger, and tight cylinder lockup. Colt originally discontinued production of the Python in 1999. The company began limited runs of the gun in 2000, but it was formally discontinued in 2005. Since then, the model has become sought after revolvers by collectors, shooters, and hunters alike.