A revolutionary sight that combines a red dot with the variable power of a riflescope. The Leupold Mark 4 CQ/T Scope was designed for use with AR-15 and M16 firearms. The Mark 4 CQ/T has a reticle that is always visible even without batteries and features DiamondCoat, twin bias spring erector system, lockable fast-focus eyepiece, tactile power selector, and 6061-T6 aircraft quality aluminum.