The Mark 4 CQ/T is a 1-3x14mm variable power "sighting device" that was designed, like the Aimpont Comp M and Trijicon ACOG, for "fast target acquisition and engagement at close to medium range."
The new unit is claimed to be rugged and submersible to 66 ft and features a true 1x setting for close range engagement. It also has ten illumination settings, for varying lighting conditions.
To learn more about the the Mark 4 CQ/T, click on this link.