Like the CompM3, the CompML3 features our breakthrough Advanced Circuit Efficiency Technology (ACET) that gives the sight unparalleled battery life and ease of use. Built primarily for use in daylight and in low light conditions for law enforcement and military applications, the CompML3 will hold up under the roughest physical handling and most severe weather conditions. It is the perfect choice for professionals, hunters and sport shooters who don't need night vision device compatibility but want an extremely tough and reliable sight. For night vision compatibility we recommend the CompM3. The CompML3 comes with a replaceable outer black rubber cover, which protects it from scratching and adds an additional stealth factor. The outer cover is also available in Dark Earth Brown - perfect camo for use in the desert and in the jungle. Unique features for CompML3 -Designed for day use, including dusk and dawn -New technology called ACET allows 50,000 hours of operation on one battery -Available in 2 dot sizes (2 and 4 MOA) -Submersible to 135 feet (45 meters) -Outer rubber cover now available in earth brown -Comes with replaceable outer black rubber cover -Reduced training time and ammunition Standard features for all Aimpoint® sights -Unlimited field of view -Parallax-free with unlimited eye relief -Unaffected by extreme weather conditions -Rugged, durable construction -No hazardous materials used -No laser emission that could be harmful to your eyes -Mechanical switch for speed and reliability -Increased aiming confidence -Reduced training time and ammunition