AimPoint M4s 2 Minute of Angle QRP2 CompM4 Sight with Mount Part of Aimpoint's highest-end series, sight features improved energy efficiency, low battery compartment, and internal voltage regulator that allows operation on any AA battery Integral mount eliminates need for separate ring, and can be customized with vertical and forward spacers to fit variety of weapon systems Unique coating on front lens reflects dots selected frequency of red light at near 100% efficiency to give highest possible dot brightness with least amount of energy Shipped with QRP2 mount and standard AR15 spacer, and killFlash anti-reflection device and MILSPEC rubber lens covers Includes limited manufacturer's warranties of two years for professional or competitive use, and ten years for personal or recreational use