Magpul MAG550-BLK MAG550BLK: The Pmag 15 GL9 is a 15rd Glock 9mm handgun magazine. The GL9 is compatible with Glock G19 handguns as well as sub-compact variants with some protrusion below the grip. Features 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 indicator windows on both sides of the body. It can drop free loaded or unloaded. *NOTE: May not be compatible with other platforms designed for use with Glock magazines due to a wide range of magwell designs and tolerances.