The Insight Tech-Gear Mini Red Dot Sight (MRDS) is a lightweight, ruggedized reflex sight that mounts to many existing optics as well as MIL-STD 1913 Picatinny and Weaver-style rails utilizing widely available aftermarket mounts. The MRDS is available in a non-reflective black or tan finish with either a 3.5 MOA or 7.0 MOA dot size and is easily adjustable for elevation or windage with 1 MOA positive click adjustments. The MRDS features an auto adjusting dot intensity but also offers the operator a manual dot intensity adjustment with 4 brightness settings. The lens of the MRDS is made from a lightweight, impact resistant polymer with an anti-reflective coating. Its rugged housing is molded from advanced polymers reducing weight without sacrificing operational durability. The MRDS has been waterproofed to 66 feet for 2 hours, frozen in ice, drop tested, subjected to a 48-hour salt fog, tested to withstand vibration, submitted to extreme temperature shock and shot on a variety of firearms for thousands of rounds. It has an operational temperature range of -40 degrees C to 49 degrees C and passes the MIL-STD 810G environmental testing protocols. Powered by a single 1632 battery that allows the unit to operate for one year in auto mode, the MRDS weighs just 0.85 ounces including battery.