The HS515GM is a circle dot sight designed with the option of using a 65 MOA circle dot reticle or switching to a 2 MOA dot only. The advanced LED allows up to 50,000 hour of operation on one (CR2032) battery and has a shake awake sensor with last setting recall. There are 12 settings for the intensity of the red dot to match the ambient lighting conditions. The top mounted buttons allow for easy operation without obstructing the user's vision. A housing design shrouds the windage and elevation turrets on two sides and the battery is mounted on the side of the optic. The HS515GM includes flip-up lens covers, kill flash and a quick detach 2 piece mount.