Glock Glock 23 Gen 5 .40 S&W 13 Round Pistol Magazine Black 13. The high quality spring and follower ensure reliable feeding from the first round fed by a fully compressed spring down to the last shot. Specifications for Glock Glock 23 Gen 5 .40 S&W 13 Round Pistol Magazine: Manufacturer: Glock Color: Black Fabric/Material: Steel Polymer Magazine Body Material: Polymer Gun Make: Glock Gun Model: Glock 23 Gun Type: Pistol Caliber: .40 S&W Magazine Capacity: 13 Round Quantity: 1 Features of Glock 23 Gen 5 Handgun Magazine 40 S&W 13/rd: Hardened steel insert Reliable feeding Fully compressed spring High quality spring Package Contents: Glock 23 Gen 5 Handgun Magazine 40 S&W 13/rd Glock 1084: Glock 23 Gen 5 .40 S&W 13 Round Pistol Magazine Black 13