A targeting apparatus for a gun comprises a mirror assembly, a mounting base and a sighting device. The mirror assembly includes a single utilized mirror having a target imaging surface. The mounting base has the mirror assembly moveably attached thereto. The single utilized mirror is movable between a sighting device use position thereof with respect to the mounting base and a mirror use position thereof with respect to the mounting base. The sighting device is attached to the mirror assembly. The sighting device includes a sighting member configured for being aligned with a mating alignment member of a companion sighting device when the single utilized mirror is in the sighting device used position thereby enabling precision aiming through combined use of said sighting devices. The sighting member is independently adjustable for windage and for elevation.