IMG Glock .40 S&W 13 Round Pistol Magazine Black. 40 S&W 13 Round Black Polymer Magazine for Glock 22. Mag body is made of virtually indestructable black nylon molded around steel inserts. Magazine spring is made from heat-treated chrome silicon wire for stiffness and durability. Witness holes are clearly visible to let the shooter know how much ammo is available at a glance. Designed for Glock Gen 3 and subsequent models. Manufacturers lifetime warranty. Specifications for IMG Glock .40 S&W 13 Round Pistol Magazine: Manufacturer: IMG Gun Make: Glock Caliber: .40 S&W Magazine Capacity: 13 Round Color: Black Quantity: 1 Fabric/Material: Polymer Package Contents: IMG Glock .40 S&W 13 Round Pistol Magazine IMG GL-0009-13RD: Glock .40 S&W 13 Round Pistol Magazine Black