Millett 1X20 SP-1 3 MOA Dot Red Dot Riflescope (1-Inch Tube), Matte
The deadly accurate combination of dot intensity control with eleven settings, crystal clear, parallax-free sighting, and the widest field of view in its class make the Red Dot SP Series the ultimate in fast-sighting capabilities. There are two knobs on this scope, the top one is for Red Dot intensity and the side knob for windage adjustments.