One of the distinctive features of the 101 holster molding is that each weapon fit is molded to the frame of the weapon specified. For example, the 101 made for the Glock 17 which has a GL 17 stamp on the backside of the holster is also designed to fit the Glock 19, 22, 23, 26, 27 models. In another example, one made for the Colt 1911 which has the CO 1911 stamp accommodates the Government model, and also the Commander and Officer size models. The rear strap attaching point to the shoulder holster is at the lower edge of the holster, which offers a diagonal (or angled) carry for maximum concealment whether you plan to carry full-size or sub-compact pistols. On the other side is a dual magazine pouch, to complement the pistol specifications, and further distributes the weight. You can adjust the retention of the magazines with two tension screws that can be tightened or loosened with a flathead screw driver.