Parallax-free aiming with a single, bright glowing red dot; proven to be the fastest, most accurate sighting system available. ACET technology allows up to 80,000 hours (over 8 years) of daytime operation on one AA battery. Internal voltage regulator allows the CompM4 to be used with any AA size battery. All sight housings are machined, or extruded from 6000 series aluminum for maximum strength. Lens surfaces are optically ground (not cast) for superior clarity. Proprietary housing and lens sealing material keeps electronic and lens surfaces dry, fog-free and fully functional regardless of weather conditions. All models feature non-reflective, Mil-Spec anodized finishes. The latest civilian version of the U.S. Army’s M68 CCO (Close Combat Optic), and the most advanced sight produced by Aimpoint. Super efficient electronics deliver up to eight years of continuous use from a single AA battery. Optics feature band pass objective lens coating for superb light transmission and optimum 3rd generation NVD compatibility. Newly improved rotary brightness switch provides 7 NVD settings and 9 daylight settings, plus one extra-bright setting for outdoor use with anti-reflective goggles. Excellent choice for varmint hunters needing a rugged red dot optic with low light capabilities. Integral, QRP2 mount (no additional mount ring required) features a single, oversize thumbscrew for fast installation and removal from Picatinny rails. Mount includes a separate vertical spacer for fast adaptation to a wide range of firearms. Available with versatile 2MOA dot. Can be quickly converted to a 3X, long-range red dot reticle scope by installing the optional Aimpoint 3XMag magnifying module listed below.