ACOG Sight 1×32 | Red Fiber Optic | Dark Earth | RAM Optics® This ACOG is equipped with a tritium phosphor wire that collects light and converts it to a red dot in the center of your viewer. The red dot changes intensity based on how much light is available. A big advantage when you quickly switch between dark and lit rooms, the red dot colors with it. You can also use this rifle scope as a red dot without magnification by looking with both eyes open (Bindon Aiming Concept) so that you can see both the red dot and the environment and are not limited by a reduced field of view when you look through the rifle scope. Fitted with 22mm Weaver mounting base for easy tool-less mounting.