A racking device is provided that can assist an individual with racking a pistol, using only one hand. The device includes a slide channel that narrows in a direction toward an intersection with a barrel channel. The narrowing enables the slide channel to receive any of a wide variety of pistols and to restrain the slide portion, or slide, thereof from moving past the intersection. The barrel channel is wide enough to accommodate the pistol barrel but not the slide. A pistol can be positioned in the slide channel and forced into the device so that the pistol barrel moves into the barrel channel while the slide is restrained by the slide channel, thereby racking the pistol with a single hand. A belt clip and a surface mount are also provided for mounting the device and stabilizing the device during use.