Single pin adjustable sight features Accu-Click system which allows the shooter to set “clicks” at desired distances. 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 AV-31 scope (1 3/8” diameter) with either a .019” or .010” green pin. HD versions are equipped with a Harmonic Dampener in the mounting bracket.