The RGY is a 1X30mm Red/Green/Yellow dot sight that is great for Modern Sporting Rifles or Shotgun use. Low light hunting or shooting comes with its own needs and the Axeon Optics RGY 1X30mm dot sight is ready to perform no matter the light conditions. This sight utilizes three colors, red, green, and yellow to allow you to make the perfect choice based on the conditions. Red and green are great in daylight and overcast outdoor light, but the yellow dot really optimizes those early morning or later afternoon hours when the sun is going down. Powered by one easy to find CR2032 battery, the RGY has a run time of 100 hours. Windage and Elevation are adjustable in 1/2 MOA clicks and the RGY is shock rated for 800G. The RGY comes ready to mount on either a Weaver or Picatinny rail.