Eliminate glare and protect your Vortex Viper Riflscope with this 50mm Riflescope Sunshade. The Vortex 50mm sun shade is compatible with Viper riflescopes having a 50mm objective lens. The sunshade is 4-inch long to provide all the protection you need to get a clear shot of your target. It is ideal for reducing glare and sun reflections off the objective lens. This sunshade uses a screw-in assembly that attaches easily for quick, easy setup and use.