This is a high capacity magazine for all Glock 9mm Pistols using double-stack magazines. 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. See .40 Caliber Variation Here