Vortex Optics Viper HS LR Second Focal Plane Riflescopes - Dead-Hold BDC Reticle (MOA) A subset of the Viper HS line, the Viper HS LR 4-16x50 (Hunting & Shooting Long Range) scope is perfect for when you need to extend your shooting range and bullet drop and wind drift compensation are crucial. 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. The HS LR offers exposed target-style elevation turrets for dialing elevation at extended ranges. The CRS Zero Stop allows you to get back to referencing zero even after coming up several revolutions on the turret. 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.