Strike Industries Glock G17 (9mm) / G22(.40 cal) Aluminum Extended Magazine Plate - Red - The Strike Industries Aluminum Extended Magazine Plate for GLOCK G17 (9mm) / G22 (.40 cal) was designed to provide smoother magazine reloading through a slow drag / no snag design while maintaining maximum magazine capacity. Machined from 6061-T6 aluminum, this Extended Magazine Plate (EMP) adds plus 5 9mm or plus 4 .40 cal rounds to compatible OEM double stack GLOCK magazines. Following the success of our EMP systems for pistols, the form factor and unique geometric design gives a unified and aggressive aesthetic look to your GLOCK G17. Included is an aluminum plate which adds extra locking security. Give your GLOCK pistol the extra rounds it deserves with the Strike Industries Aluminum Extended Magazine Plate (EMP) for GLOCK G17 (9mm). Features: Machined from 6061-T6 aluminum; Plus 5 round capacity for 9mm; Plus 4 round capacity for .40 cal; Includes aluminum locking plate; Low drag / no snag design; Fits USPSA 140mm race division limit; Package Contents: x1 Aluminum Extended Magazine Plate for GLOCK G17 (9mm) / G22 (.40 cal); x1 Extended length spring; x1 Aluminum locking plate; x1 Aluminum locking plate set screw (M3x8mm); x1 Hex tool [2mm]; x1 Warning card