and moving mag catch to butt takes all DAY man, along with grinding "up" on the frame, inside the guard, and removing the excess metal in the frame all around the guard. The latter lightened the frame by 2 ozs. The Firestar like "sinus" at the top of the front strap lets you nearly get all fingers on the front strap. A PPK type finger extention on the bottom front of the mag takes care of what's left. The recoil of the 356 "Split Nose" load, 55 grs, 2200 fps, is stiff enough that if you want really fast repeat hits (ie, .18 second, like can be had with the 1911, you need all the fingers helping.