Single pin adjustable sight features Accu-Click system which allows the shooter to set â??clicksâ?쳌 at desired distances and carbon bar dovetail mount. As the sight elevation is adjusted, it will stop at those specified distances. A 45 degree facing sight tape makes it easier for the shooter to see where the yardage indicator is set. 1st, 2nd, and 3rd axis adjustments can be made without the use of shims. Micro adjust windage is locked into place until the Windage Lock Button is disengaged. Includes Axcel AccuView Scope with Fire Pin, Crosshair Insert, and adjustable rheostat. Available in 31mm or 41mm scope diameters.