Using a genuine Smith & Wesson SD VE Pistol Magazine ensures the SD VE semi-auto pistol functions flawlessly under all conditions. S&W mags are constructed from steel, using premium springs and polymer shell followers. A round count indicator lets you know how many cartridges are left at a glance. This is a factory replacement part, manufactured with the same materials and to the same exact specifications and tolerances as the original magazine, which guarantees excellent fit and reliable operation. Smith & Wesson knows how to make the SD VE pistol and they know how to make a pistol magazine that functions in it. Why risk using anything else Genuine Smith & Wesson magazines Constructed from steel Premium springs Polymer shell followers Manufactured to factory specs