ADCO ADCO, Super Thumb, Mag Loader, Fits Glock9MMS/40SW, HK USP 45, S&W M&P 45, Springfield XDM 45, STI Double Stack Magazines, Black ST2 Reloading magazines takes a lot of cheer out of a day of shooting fun. With the ADCO Super Thumb Loader" you should be in good shape but you might need to bring a little extra ammo so you don't run out.