Optical 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.

Construction Features
Tube Size	30 mm 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.
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 riflescope's left side and is easily accessible from shooting position. Provides optimal image focus and parallax removal.

Internal Mechanism Design Features
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.

Convenience Features

MAG-View Fiber Optic Provides a highly visible reference point for the magnification setting. Fast Focus Eyepiece Allows quick and easy reticle focusing.

Description

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Vortex Viper HS riflescopes offer hunters and shooters an array of features sure to be well received. The advanced optical system, highlighted with a 4X zoom range, provides magnification versatility. A forgiving eye box with increased eye relief gets shooters on target quickly and easily. Built on an ultra-strong 30mm one-piece machined aluminum tube, the Viper HS delivers increased windage and elevation travel for optimal adjustment.