A holographic weapon sight or holographic diffraction sight is a non-magnifying gunsight that allows the user to look through a glass optical window and see a holographic reticle image superimposed at
A view through an EOTech 512 holographic weapon sight.
A United States Marine firing an M4 carbine, using an EOTech holographic sight to aim.
Internal light path of EOTech holographic sights.
A collimator sight is a type of optical sight that allows the user looking into it to see an illuminated aiming point aligned with the device the sight is attached to, regardless of eye position. They
M4 collimator sight on a M4 mortar