Description Third generation Glock 31 chambered in .357 SIG with a 4.49″ barrel. Textured grip on composite frame. Blued metal serrated slide. Composite trigger with depression safety. Left side of frame serrated slide release button. Lower left side of frame serrated magazine release button. Trijicon T H3 07 fixed white dot night sights. Comes in factory Glock box with instruction manual, speed loader, and three fifteen round magazines. All three magazines come with Pearce Grips PG-39 grip and magazine extension. Check Local/State laws on HIGH CAPACITY magazines. Must ship to a FFL holder. Condition: Very good/Excellent with only a couple scuffs on the slide serrations. Clean bore with strong riffling. Barrel Length: 4.49″ Serial: HMX404 Manufacturer: GLOCK Caliber: .357 SIG Model: G31 Gen 3 Year-Range 1998-2010