Tenebraex Vortex Viper PST 2.5-10x44 ARD flip cover compatible VV0044-ARD is one of the best anti-reflection devices for your riflescope. It has anti-glint capabilities that helps protect the optics glass from factors like sand, dirt and grime. It also protects the lens from scratches and damage, and offers an inexpensive, retrofittable, field-practical way of reducing objective lens glare and reflection. The ARD is rendered complete with a unique geometry, flip cover compatible design, and cutting-edge honeycomb material to hide reflections from optical surfaces. The installation of the Tenebraex VV0044-ARD anti-reflection device adds to the life of the scope it is paired with. It is especially made to fit Vortex Viper PST 2.5-10x44 rifle scopes.