From Leupold & Stevens, the Mark 4 1-3x14mm CQ/T is a optical sight for firearms such as the AR-15 and M16, combining the strengths of a red dot sight and the flexibility of a variable power riflescope. Just as important, the etched glass reticle is always visible, with or without batteries, so officers won't lose a point of aim if the batteries die. The CQ/T possesses eleven reticle illumination settings to match any light conditions (the two lowest are compatible with night vision equipment) and uses common AA batteries, powering the CQ/T for more than 600 hours at medium setting.