After Market Clone of the Original Glock 43X/48 Factory Magazine, 10 Round capacity. Fits Flush in all Glock 4X3 or 48 model pistols.;Black Polymer with Steel Reinforcement Inserts and Loaded Round Indicators Just Like the original. We have tested extensively and they work great.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.