The Smith & Wesson SW series of guns, more commonly referred to as “Sigma”, were smith & Wesson’s first attempt at a polymer framed, Striker fired pistol. Unfortunately for Smith & Wesson, the initial design of the pistol was found to resemble designs from Glock so closely that Smith & Wesson was sued for patent infringement, forcing an alteration of the design and later paid settlement. This Used example is one of the 9MM variants, overall condition of which is good, with light to mild wear and a few scratches on the slide.