The HKS Magazine Speedloader is capable of loading 15 rounds in 18 seconds. Faster and easier than ever before, our magazine speed loader quickly loads double stack magazines. Its simple: magazine slips into loader and is held in by hand. Depress thumb lever and load. That's it! Fits Glock 17, 19, 22, 23, 26, 27, 33, 34, 35, 39/HK USP/S&W SIGMA 9MM & .40 Cal. Made in USA.