Single pin sight with fixed single pin scope. Compact and lightweight, weighs only 8.5 oz. Features adjustable 2nd and 3rd axis, rear facing yardage tape, and an adjustable long range yardage stop to set your maximum sight travel. Micro push-button sight light and over 60 pre-marked yardage tapes are also included. Aperture size: 1.87â?쳌. Accepts Covert Lens Kit (Sold Separately.)