Strike Industries' aluminum extended magazine plate for Glock G17 (9mm)/G22 (.40 Cal) is engineered for smoother magazine reloading with its slow drag, no-snag design, all while maximizing magazine capacity. Precision-machined from 6061-T6 aluminum, this extended magazine plate (EMP) increases capacity by 5-rounds for 9mm or 4-rounds for .40 Cal in compatible OEM double-stack Glock magazines. Building on the success of Strike Industries' EMP systems, its geometric design enhances functionality and adds an aggressive, unified aesthetic to your Glock G17. Each plate includes an aluminum locking plate for added security. Elevate your Glock pistol's capacity and style with the Strike Industries aluminum extended magazine plate (EMP).