The Simeon .357 is one of two revolvers available to several mercs in Dirty Bomb. It is based off of the real-life Smith & Wesson M&P R8 revolver. However, where the real-life R8 can hold eight rounds of .357 Magnum, the Simeon can only hold six, similar to most other types of revolvers (this is presumably for balancing purposes). Ironically, while the other revolver in the game, the Smjüth & Whetsman .40, is named after this gun's real-life manufacturer, the Smjüth & Whetsman's real life counter-part isn't manufactured by Smith & Wesson at all. Instead, it is based off the Dan Wesson PPC revolver.