HKS GL-940 Large Caliber Double Stack Magazine Speedloader Capable of loading 15 rounds in 18 seconds; Made in USA Loads double stack magazines Magazine slips into loader and is held in by hand Thumb lever Fits Glock 17, 19, 22, 23, 26, 27, 33, 34, 35, 39/HK USP/S&W SIGMA 9MM & .40 Cal