Abstract: A removable and remountable gun sight comprising a point light viewable through an elongated tubular structure having a anti-reflective coating along the inner surface thereof, and a captive removable low illumination light source, preferably a chemical illuminating capsule, disposed to provide the point light source with illumination in low ambient or darkness. The gun sight is retained by a substantially C-shaped clip which engages the gun barrel, ventilation rib or other available gun portion along a length which requires the shooter to elevate one end apart from the gun portion to effect removal from the gun. Alternate embodiments include ambient light energized luminous rod elements interposed between the captive light source and the distal end of the elongated tubular structure, which provides continuous illumination of the point source to the shooter as he moves from high ambient light to low ambience or darkness.