VP9-B Match Pistols 9mm Optics Ready Push Button Mag Release- supplied with two additional backstraps two additional sets of lateral grip plates and slide cover plateSpecifications: Caliber: 9mm Luger Length: 8.78 in Height: 6.50 in Barrel Length: 5.51 in. Sight Radius: 7.68 in. Weight (with empty magazine): 24.16 oz. Magazine Capacity: 20 Trigger Pull: 5.4 pounds Return Travel: .12 in. Barrel Profile/Twist: Polygonal 6 grooves right-hand twist 1 in 9.8 inches