The PMAG 17 GL9 is a 17-round Glock 9mm handgun magazine featuring a new proprietary all-polymer construction for flawless reliability and durability over thousands of rounds. Their Glock magazine comes with many of their other PMAG features including a high visibility controlled-tilt follower, stainless steel spring, easily removable floorplate for cleaning, paint pen dot matrix for mag marking, ridged floorplate edges for better grip, and 17rd indicator windows. Drops free loaded or unloaded. All with the same boring reliability you expect from an OEM magazine.