HiViz Spark III Red Orange and Green Interchangeable Pipes. Each of these Night Sights from HiViz is packaged with five threaded studs (6/48 3/56 5/40 3mm x .5 and 3mm x .6) to fit most common shotguns with a removable front bead. The HiViz Spark III Illuminated Shot-Gun Sight has a Litepipe Diameter of 0.090 inches and the overall height is 0.160 inches. Specifications for HiViz Spark III Night Sight w/ Red Orange and Green LitePipes: Manufacturer: HiViz Color: Green/Red/White Beam Color: Green/Red/White Finish: Matte Package Contents: Hiviz SK2011 - Spark III Red Orange and Green Interchangeable Pipes HIVIZ Spark III Shotgun Sight. Screw-Attach design replaces the front bead on a shotgun. Includes Green Red and White replaceable LitePipes.