The HE503GU-GR Elite is a micro green dot optic designed for day and night use and unaffected by extreme weather conditions. With an unlimited field of view the optic is equipped with a 65 MOA circle dot reticle with the option of switching to a 2 MOA dot only. With the green LED technology the life-time for one (CR2032) battery can last up to 5 years on the 2 MOA dot setting. The shake awake automatically turns the optic on at the slightest movement, if the optic senses no movement, it will go to sleep. The battery is side mounted on the side of the optic with a housing design that shrouds the windage and elevation turrets on two sides. A low mount and 1/3 Co-witness mount included.