The SIG Pro was the first polymer-frame handgun from Sig Sauer and one of the first pistols to feature a built-in universal accessory rail and interchangeable grips. The overall design is slightly different from earlier Sig Sauer pistols such as P220 or P226, as there is no separate dis-assembly lever on the frame and the slide release lever looks quite different. This pistol comes with 3 Mags (2 are 17rd & 1 is a 15rd), and the holster for the pistol. It comes with night sights.