Glock Compatible .40 Cal 31 Rd Capacity Mag. Steel Lined and Reinforced Polymer Body Aftermarket Mag

High Capacity Mag for all various Glock .40 Cal Pistols including the 22, 23, and 27 and 35\'s. Mag extends out of mag well. 31 Round Capacity - Mfg WarrantyPolymer 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.