Excellent light transmission, extremely robust housing design, and advanced optical lenses all in a more lightweight housing. The Aimpoint CompM5 is the smallest, and most compact optic ever offered in the Aimpoint Comp line of red dot sights. The Aimpoint CompM5 is constructed with a high militar... Read Morey-grade lens system that allows for optimum light transmission, as well as enhanced clarity of the high-performance red dot. ACET technology provides you with over 5 years of battery life on a single battery. The Aimpoint CompM5 is compatible with every generation of night vision and has 4 NVD settings and 6 daylight settings with a mechanical switch for speed and reliability. Read Less