The Glock G31 is a polymer-framed pistol with a built in accessory rail. The pebbled grip is designed for minimal slippage and greater comfort and to this end features a checkered front and back strap finger groves and a thumb rest on each side of the frame. Chambered in 357 SIG with a barrel length of 4.48 the Glock G31 weighs just 33.2 ounces when loaded. Many law enforcement agencies across the U.S. have adopted the G31 as a preferred service pistol.DetailsThe high-performance GLOCK 31 is characterized by extremely high muzzle velocity and superior accuracy even at extended shooting distances. This .357 pistol is the optimum solution for those looking for these attributes in a reliable yet lightweight pistol with large magazine capacity. Many law enforcement agencies have already selected the G31 as their official service pistol. - Length 204 mm 8.03 in. - Width 30.00 mm 1.18 in. - Length Between Sights 165 mm 6.49 in. - Height 138 mm 5.43 in. - Barrel Height 32 mm 1.26 in. - Barrel Length 114 mm 4.48 in. - Weights Unloaded 740 g 26.12 oz.-Loaded 940 g 33.18 oz. - Trigger Pull 2.5 kg 5.5 lbs. - Trigger Travel 12.5 mm 0.49 in. - Barrel Rifling right hand hexagonal - Length of Twist 250 mm 9.84 in. - Magazine Capacity Standard 15 Optional 10BLACK FINISH