50 Round Drum Magazine in .40 caliber for all double stack Glock .40 Caliber Pistols. These drums are now coming with completely black polymer bodies. Will not fit Smith & Wesson manufactured handguns, only Glocks chambered in .40 S&W.Note Due to LImited Quantities and High Demand we are limiting these drums to an order quantity of no more than 25 units / order. Any attempt to order higher quantities will be rejected at check out.