Steiner 6x40 ICS Innovative Combat Sight (Red Dot , Optical Performance 6x magnification 40mm objective lens Anti-reflection fully multicoated optics 21' field of view at 100 yards 4° angle of view Intelligent BDC Calculator Class 1 eye safe IR laser, peak wavelength: 905nm Integrated ranging laser measures distance to target Built-in inclinometer calculates angle to target User enters ammunition specs and software calculates ballistic properties Software adjusts aiming dot placement based on range, angle and user-defined round ballistics Ranging time: to target at 550yd / 500 m is 1 second, to target at 765 yd / 700 m is 2 seconds Remote pressure pad switch included for activating system while maintaining safe grip on weapon