Abstract: A rear peep sight for use with an archery bow has a sighting body with front and rear surfaces joined by a side surface and a mounting groove formed in the side surface for retaining the sighting body on a bowstring. A sighting aperture and a plurality of locator apertures extend from the rear surface to a bottom surface of a cavity in the sighting body. An insert body in the cavity is formed of a light transmitting material for transmitting light incident at the front surface through the locator apertures to an eye of an archer located at the rear surface. The insert body is removably retained in the cavity by the bowstring such that it can be replaced by an insert body of a different color. Shutters formed on the sighting body rear surface, opaque areas on the insert body and shutter apertures are utilized to vary the amount of transmitted light reaching the eye of the archer.

Abstract: A rear peep sight apparatus for use with a projectile device such as a bow includes a body formed of a transparent material for mounting in a bow string. The body has generally parallel front and rear surfaces connected by a curved side surface and the side surface and a portion of each of the front and rear surfaces is opaque. The body has a cavity formed therein for mounting a light source which is either self contained or connected by a spiral wound elastic conductor to a battery and switch enclosed in a housing which can be releasably attached to the bow. The peep sight can include a sighting device such as, for example, an oval ring, a dot and a cross hair. In the alternative, the light source can be located in the housing and the light transmitted through a fiber optic conductor to the body.