HiViz Express Sights for MK II, MK III, MK IV and 22/45 This new sight system provides a bright, fiber optic front sight with an easy to align "V" type rear sight. A white line accents the bottom of the V making it natural to locate the notch and position the fiber optic front precisely. You get three (3) colors of fiber optic "LitePipes" in this package: 2 Red, 2 Green, and 2 White. The set includes a white line V blade for your factory Ruger rear sight (easy installation). You also get a replacement front sight and base to hole the fiber optic LitePipes. Along with the LitePipes carrying case and key, you get complete photo illustrated instructions. Order your's today!