The barrel, by the way, is 4.7 inches instead of the usual 4.9. In addition to making the gun a little shorter, it makes for a better-looking pistol. Some thought that the muzzle protruding from the slide on the familiar M9 looked a little, well, ungainly. Notes Green, “The only reason for the extended barrel in the first place was to have room to cut threading so you could add a sound suppressor.”

