The RT-3 from Burris is a fixed 3x magnification red dot with a huge field of view. It's small footprint and lightweight design makes for quick handling and easy shots out to distance. Lightweight for better balance The Ballistic AR reticle for mid to long-range targets Large field-of-view for greater situational awareness Automatic shut-off for extended battery life 7 Illumination settings; 4 daytime / 3 Night Vision