KCI USA Glock 22/23 Pistol Magazine .40 S&W 10/15 Round Black 1 Pack Hardened Steel/Polymer. The polymer molding helps to protect the magazine body from damage and deformation from regular use. Specifications for KCI USA Glock 22/23 .40 S&W 10/15 Round Pistol Magazine: Manufacturer: KCI USA Gun Make: Glock Caliber: .40 S&W Magazine Capacity: 15 Round Color: Black Fabric/Material: Polymer Package Contents: KCI USA Glock 22/23 .40 S&W 10/15 Round Pistol Magazine KCI USA KCI-MZ049-10-15RD: Glock 22/23 Pistol Magazine .40 S&W 10/15 Round Black 1 Pack Hardened Steel/Polymer