Gear driven adjustable sight made from 100 percent machined aluminum. Includes sight tapes that allow you to sight in from 20-80 yards in 1 yard increments. Features tool free windage and elevation adjustments and mechanical rheostat to adjust pin brightness. 3 pin housing is 2" in diameter with 4.5 ft. of fiber optic. Accepts Lens Kit 35 and Blue Burst sight light (both sold separately).