Since the introduction of the Glock model 21 chambered for the legendary .45 ACP cartridge, it has been a steady seller, with those who shoot them developing an almost cult-like devotion to the big pistol. The only complaint that I have ever heard leveled against the model 21 is regarding the size of the pistol’s grip. It was designed to hold thirteen of the fat .45 ACP cartridges in a double column magazine, and the grip is necessarily large. This is fine if you have large hands, but is a bit awkward for shooters with small to medium hand sized...