A bow sighting improvement device employing fiber optic elements and using an electro-mechanical control to illuminate one pin only and to provide a leveling control function to the optic system. The device is secured to the archery bow and fiber optic bow sight. It is comprised of a revolver device with a power source, light source and a control system with features; a means to attach the revolver to an optical bow sight that sight having at least two fiber optic sight tips powered each by a fiber strand; a means to attach the revolver device to an archery bow wherein the control system may singularly power one fiber optic strand and light one sight tip and wherein the intensity of the lighting of the tip may be controlled; a tilt/torque switch assembly; and a means for connecting the tilt switch assembly to the revolver control system.