The PMAG GL9 provides 21 round capacity while maintaining reliable function across compatible Glock models. Magazine indicator windows are located on both sides of the body at 10, 15, and 21 rounds remaining for quick visual confirmation. The reinforced polymer body supports long term durability under range and defensive use.

The PMAG 21 GL9 is a 21-round Glock 9mm handgun magazine featuring a new proprietary all-polymer construction for flawless reliability and durability over thousands of rounds. Meeting the overall length requirements for a 140MM competition magazine, the PMAG 21 GL9 offers additional capacity without the need for expensive extensions. 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 capacity indicator windows. Drops free loaded or unloaded.