Vortex Optics Viper HS Second Focal Plane Riflescopes The Viper HS 4-16x50 is one of multiple configurations in the Viper HS (Hunting & Shooting) line. The Dead-Hold BDC reticle is good for any hunting or shooting at varying ranges where estimating hold-over would be a concern. In the advanced optical system, the XD glass renders an image that is sharp and clear from edge to edge. There are XR multi-coated lenses allowing you to capture the most light from dawn til dusk.The 4x zoom range will pull you close to your target. Featuring capped quick-reset turrets you will be able to quickly reindex your zero after sighting in. They're built on a 30mm main tube which increases the amount of elevation and windage travel for optimal adjustment. Ultra-hard, scratch resistant Armortek coatings protect the exterior lenses of the scope. Argon purging provides fogproof and waterproof performance. The hard-anodized matte black finish is extremely durable and looks awesome too. Whether hunting whitetail in the midwest or elk in the Rockies, the Viper HS is designed to be your all around workhorse optic.