Aimpoint Comp M4S The Aimpoint Comp M4S is part of the Comp series of sights which are the toughest sights that Aimpoint has ever produced. These red dot sights are the standard infantry soldier sight in many NATO countries. These optics are extremely rugged and operate continuously for up to 8 years using a single AA battery. The competition is not even close. The first Aimpoint Comp sight came out in 1995 and today there are more than 1 million sights from the Comp series in use worldwide. Type classified as the U.S. Army’s new M68CCO All Comp sights are soldier tested and combat proven, in other words, they are extremely robust high quality products. The Aimpoint CompM4s is the latest version of the U.S. Army’s M68CCO (Close-Combat Optic), continuing a legacy that Aimpoint has maintained since 1995. High battery compartment Compatible with every generation of NVD ACET technology allows up to 80,000 hours (over 8 years) of daytime operation on one AA battery Internal voltage regulator allows the Aimpoint CompM4S to be used with any AA size battery 7 NVD settings and 9 daylight settings QRP2 mount has twice the clamping force of the original QRP, and the mounting knob is wider and shorter to improve operation and lower the risk of snagging on other gear Mount base is keyed into to the body of the sight to absorb recoil Mount base screws directly into the sight – no separate sight ring required. 500,000 hours of use on NVD setting 2 MOA dot for close combat and long distance engagement Matches perfectly with Aimpoint 3XMag Unequalled light transmission Front lens opening is threaded for addition of killFlash® anti-reflective device Submersible to 150 feet (45 meters) Removable spacer to meet different height standards Improved adjustment caps are easier to remove and protected against impact Can be used with a carry handle adapter for use on all M16 rifles Mechanical switch for speed and reliability What’s In the Package Aimpoint Comp M4S, Anti Reflection Device, Bikini Cover, Vertical Spacer, User Manual