Effortlessly shrugging off recoil, moisture and darkness! The Viper s status as a premium riflescope won t be as easy to shake. Discover a riflescope with incredible performance features like premium, fully multi-coated optics with 95 percent light transmission, heavy duty Precision Force spring systems and the glass smooth Precision Glide erector system delivering all this and more at a price that should have pulled a few more hundreds from your wallet than it did. 6.5-20x50 riflescope is ideal for tactical, long range, predator/varmint, and target applications. Mil Dot reticle is useful for helping estimate range, windage and bullet hold-over. Good for long distance shooters and hunters who need the ranging ability. The Mil Dot subtensions are accurate at 14x. Side knob parallax adjust allows quick and easy parallax adjustments with range numbers visible while in the shooting position. 30mm main tube offers improved windage and elevation adjustment along with greater strength. Tall capped turrets allow quick and easy field adjustments. Features XD Lens Elements: Extra-low dispersion (XD) glass increases resolution and color fidelity, resulting in crisp, sharp images. XR Fully Multi-Coated: Proprietary coatings increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. Second Focal Plane Reticle: Scale of reticle maintains the same ideally-sized appearance. Listed reticle subtensions used for estimating range, holdover and wind drift correction are accurate at the highest magnification. Tube Size: 30mm diameter. Single-Piece Tube: Maximizes alignment for improved accuracy and optimum visual performance, as well as ensures strength and waterproofness. Aircraft-Grade Aluminum: Constructed from a solid block of aircraft-grade aluminum for strength and rigidity. Waterproof: O-ring seals prevent moisture, dust and debris from penetrating the riflescope for reliable performance in all environments. Fogproof: Argon gas purging prevents internal fogging over a wide range of temperatures. Shockproof: Rugged construction withstands recoil and impact. Hard Anodized Finish: Highly durable low-glare matte finish helps camouflage the shooter s position. ArmorTek: Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt. Precision-Force Spring System: Uses premium components in the erector-spring system to ensure maximum repeatability and ease of adjustment. Precision-Glide Erector System: Uses premium components in the zoom lens mechanism to ensure smooth magnification changes under the harshest conditions. Capped Reset Turrets: Allow quick re-indexing of the turret (no tool needed) to zero after sighting in the riflescope. Caps provide external protection for turret. Side Focus: Adjustment located on riflescopes left side and is easily accessible from shooting position. Provides optimal image focus and parallax removal. MAG-Bar: Allows rapid, easy changes in magnification. Fast Focus Eyepiece: Allows quick and easy reticle focusing. Product Specifications Magnification: 6.5-20 x Objective Lens Diameter: 50 mm Eye Relief: 3.1 inches Field of View: 17.4-6.2 feet/100 yards Tube Size: 30 mm Turret Style: Tall capped Adjustment Graduation: 1/4 MOA Travel per Rotation: 12 MOA Max Elevation Adjustment: 65 MOA Max Windage Adjustment: 65 MOA Parallax Setting: 50 yards to Infinity Length: 14.4 inches Weight: 21.6 ounces