Product DescriptionThe KCI USA Glock-pattern magazine is built for dependable feeding and durability, featuring a hardened steel insert encased in a protective polymer shell. This hybrid construction helps resist damage and deformation from regular use while maintaining proper fit and function. Designed for .40 S&W pistols using the Glock pattern, this extended magazine offers a high 31-round capacity for range use and training.Product Highlights Glock-pattern .40 S&W magazine engineered for compatible Glock models Extended 31-round capacity for longer strings of fire and fewer reloads Hardened steel insert encased in polymer to help protect against deformation Polymer exterior helps shield the magazine body from impacts during regular use Stainless steel spring material for consistent feeding performanceSpecs Brand: KCI USA Manufacturer Part Number: KCI-MZ012 UPC: 851586008177 Caliber: .40 S&W Capacity: 31 rounds Compatibility: Glock 22 / 23 / 24 / 27 / 35 Body Material: Hardened steel insert / polymer exterior Spring Material: Stainless steel Color: BlackDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.