HiViz - 3/8in Dovetail Rifle Front Sight .500in Height Red/Green. 420in Gun Sight DOVM-500 is a .500" front rifle or muzzleloader sight. This Illuminated Rifle Sight from HiViz comes with six interchangeable .080 diameter fiber optic family LitePipes in various colors as well as a key to interchange the LitePipes. The Hi Viz 500DOVM Front Gun Sight fits rifles and muzzleloaders with a 3/8" dovetail. The height of the Hi-Viz DOVM-500 Sight is measured from bottom of the dovetail to the top of the sight. Specifications for HiViz DOVM-500 - 3/8in Dovetail/Rifle/Muzzle Loader Front Sight .500in height: Manufacturer: HiViz Color: Green 3 Red 3 Fabric/Material: Steel Beam Color: Green 3 Red 3 Finish: Matte Package Contents: Hiviz DOVM-500 - 3/8in Dovetail Rifle Front Sight .500in height HIVIZ Interchangeable 1/2 Tall Front Sight for rifles and muzzleloaders. Fits models with 3/8 dovetail front sight. Includes three Green and three Red replaceable LitePipes.