When shooting long distances in which bullet drop and wind drift composition are crucial, the Vortex Viper HS LR 6-24x50mm Rifle Scope with FFP XLR MOA reticle makes an excellent choice. It features an exposed, target-style elevation turret that's built for dialing elevation at extended ranges, plus CRS Zero Stop for easy return to zero. MAG-View fiber optic technology provides a highly visible reference point for magnification setting, and a patented Radius Bar fiber optic turret rotation indicator provides a highly visible and tactile point of reference for turret rotations. As with all Vortex Viper HS scopes, top quality optics are standard and feature extra-low dispersion glass and proprietary XR coatings for clear, bright images, superior edge to edge clarity and true color. The single-piece, hard anodized tube features a capped windage turret that maintains the Scope's sleek lines and prevents it from hanging up on clothing, rifle cases or scabbards. Rugged construction, O-ring seals and Argon purging ensure shockproof waterproof, fogproof performance for every situation. Extra-low dispersion (XD) glass increases resolution and color fidelity, resulting in crisp, sharp images XR proprietary coatings increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces ArmorTek Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt First Focal Plane, hashmarked MOA-based long range reticle with wind drift dots and 1 MOA wind reference subtensions Fast focus eyepiece allows quick and easy reticle focusing Exposed Tactical Elevation Turret provides fast, accurate and easily read elevation adjustments Capped windage turret prevents hang-ups on clothing, rifle cases or scabbards CRS Zero Stop aids in return to zero after dialing temporary elevation correction MAG-View fiber optic provides a highly visible reference point for the magnification setting Radius Bar fiber o