This is a high capacity magazine for all Glock 9mm Pistols. This Mag extends out of the mag well. We cannot guarantee that all of these magazines will have a textured surface. Mfg Warranty - Polymer mag body lined with a steel sheath and steel reinforced feed lips. These look and work great. Has remaining round count window up back of mag just like the original. ometimes when the Zombies are coming faster than you can shoot them all you can do is shoot em faster. When that happens, you will be so glad you have one of these.