An illuminated sighting system for providing an illumination at a sight of a firearm includes a power source housed within a compartment of the firearm. The sighting system further includes a light source. The system additionally includes a switch which completes a power circuit that provides power from the power source to the light source when activated, and a conduit configured to transmit light from the light source to the sight of the firearm. The sighting system includes a feature to deactivate the light source when the firearm is holstered or in another stored condition.