Any shooter knows that loading magazines is usually one of the more tedious tasks that has to be done when shooting at the range with a magazine fed pistol. Cut down on reloading time by having an extra magazine at the ready with this extra magazine for the .177 caliber Gen 5 Glock 17. These magazines are also perfect for practicing reloading drills since they simulate the weight of the real 9mm magazines and drop free once the magazine release is pushed.