Strike Industries Glock G17 (9mm)/G22 (40cal) Extended Magazine Plate - The Strike Industries Extended Magazine Plate for the Glock G17 (9mm) and Glock G22 (40cal) was designed to provide smoother magazine reloading through a low drag/no snag design while maintaining maximum magazine capacity with any OEM Glock magazine. The Extended Magazine Plate provides an additional 6 rounds to any G17 (9mm) magazine in addition to adding an additional 5 rounds to any G22 (40cal) magazine. Included is a Strike Industries special steel locking plate. Compared to other magazine extension plates on the market, the Strike Industries steel locking plate features a hook design which adds extra locking security to increase the durability of your magazine and extended magazine plate when fully loaded with rounds. The extended magazine plate provides better gripping and overall control along with increasing the overall efficiency of reloads. Please note, this extended magazine plate is not compatible with 10-round magazines. Plus 6-Round Capacity For G17 (9mm) Plus 5-Round Capacity For G22 (40cal) Fits USPSA 140mm Race Division Limit Includes Locking Steel Plate Low Drag, No Snag Design Impact-Resistant Polymer Extended Grip Surface