Vortex Denali HD 5-25x50mm Rifle Scope -Illumination when you need it. Precision when it counts. The Denali HD riflescope lineup helps you adapt to every challenge, from your first shot at dawn to your last chance at dusk. This rugged family of riflescopes ensures you're ready when distance and tough lighting conditions put you to the test. Features HD Optical System - Optimized with select glass elements to deliver exceptional resolution, cut chromatic aberration, and provide outstanding color fidelity, edge-to-edge sharpness, and light transmission.; Motion Activation With 10 Minute Auto-Shutoff - Automatically activates with motion while 10 minute auto-shutoff saves battery life.; Revstop Zero System - For a rock-solid return to zero after turret adjustments.; Fully Multi-Coated Lenses - Anti-reflective coatings on all air-to-glass surfaces provide increased light transmission for greater clarity in low-light performance.; Argon Gas Purged - Gas Purged and O-ring sealed for fogproof and waterproof performance in all conditions.; Aircraft-Grade Aluminum - Constructed from a solid brick of aircraft-grade aluminum for strength and rigidity.; Single-Piece Tube - Maximizes alignment for improved accuracy and optimum visual performance, as well as ensures strength and waterproofness.; Fogproof - Designed to withstand a wide range of temperatures.; Illuminated Reticle - Provides precise aiming under low-light conditions.; 30mm Main Tube - For increased travel; Exposed Locking Elevation Turret -Integrated locking mechanism prevents accidental adjustments. Elevation turret provides fast, accurate, easily read elevation adjustments.; Armortek - Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil, and dirt.; Fast-Focus Eyepiece - Allows quick and easy reticle focusing; Low-Glare Matte Black Anodize - Corrosion and wear resistant anodization provides low-glare matte surface and helps camouflage the shooter's position.; Waterproof - Designed to withstand harsh weather conditions; Shockproof - Designed to withstand the highest levels of recoil and impact; Includes: Neoprene Cover; Sunshade; Lens Cloth; CR2032 Battery; 2mm Custom Tool; RevStop (R) Zero Ring;