DI Optical’s new EG1 prism gunsight provides a parallax free reticle for increased accuracy and rapid target acquisition. The shaded 30mm lens provides a wide, crystal clear field of view. CNC machined from a solid billet of aircraft quality 6061-T6 aluminum, the compact EG1 is unsurpassed in ruggedness and reliability. The rotary brightness switch can be conveniently operated with a gloved hand.