Slider sight features an adjustable yardage stop, ultra-smooth elevation adjustment, and micro adjust windage adjustment. Scope housing has a 1/2" circle with illuminated green center dot for improved long range accuracy. 11 brightness settings allow the shooter to adjust to any conditions. Includes over 40 pre-marked yardage tapes and 2nd/3rd axis adjustable illuminated level. Adjustable for right and left handed shooters. Accepts 1.87" scope lens (sold separately).