A handgun sighting device forming an integral part of the handgun and employing a laser device for projecting a laser beam. The laser device is included in a laser assembly disposed adjacent the top portion of the handgun's handgrip rearward of the trigger and extends laterally away from the handgrip a distance sufficient to allow the projection of the laser beam, while not being obtrusive to the user. For powering the laser device, the sighting device employs driving circuitry preferably disposed within the handgrip. For selectively enabling the laser device, the sighting device employs a switch mechanism preferably accessible on the handgrip. The sighting device, in one embodiment, is adapted for use with handguns having handgrips with removable grip panels and, in another embodiment, is adapted for use in handguns that do not employ removable grip panels.