This invention relates to gun sight lighting device and more particularly to an attachment that can be affixed to a gun sight to enable the gun and the sight to be used in situations where very little incidental light is present. The attachment consists of a source of light that is attached to a gun sight of the type that operates on the principle of superimposing a sighting image on a target. The light source is directed specifically at illuminating the object that is used to develop the sighting image so that the gun sight can be used in conditions where the level of incidental light present is insufficient to enable the sighting image to be readily seen by the user of the sight, but the level of incidental light is sufficient to permit the target to be seen by the user of the sight.
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