OPTICAL
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
Tube Size 
30 mm diameter provides maximized internal adjustment and strength.
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 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 hard-coat anodization provides a low-glare matte surface and helps camouflage the shooter's position.
ArmorTek ® 
Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt.
Exposed Tactical-Style Turrets 
Provide fast, accurate and easily read elevation and windage adjustments.
Side Focus 
Adjustment located on left side of turret housing is easily accessible from shooting position. Provides optimal image focus and parallax removal.

INTERNAL MECHANISM DESIGN
CRS™ Zero Stop 
Customizable Rotational Stop (CRS) aids in return to zero after dialing temporary elevation correction.
Precision-Force Spring System 
Uses premium components in the erector-spring system to ensure maximum repeatability and ease of adjustment.
Precision-Glide Erector System 
This system ensures the components in the zoom lens mechanism glide smoothly and cleanly through all magnification ranges.

CONVENIENCE
MAG-View Fiber Optic
Provides a highly visible reference point for the magnification setting.
Radius Bar 
Fiber optic turret rotation indicator provides a highly visible and tactile point of reference for turret rotations.
Fast Focus Eyepiece 
Allows quick and easy reticle focusing.

Viper HST 4-16x44 Dimensions (in inches)

OUR VORTEX INTERNATIONAL VIP WARRANTY IS ABOUT YOU, NOT US.

The Vortex Worldwide Lifetime VIP Warranty covers your purchase worldwide through the distributor or dealer in the country where you purchased your product. In Australia this is Extravision Australia.

Distributors and dealers in countries other than where you made your purchase may apply service charges due to different rules and regulations in that country. We recommend you make your purchases from your local distributor or dealer to ensure you get the best service should there ever be a need.

Products shipped from the USA out of the country are considered Gray Market Products and are not covered by this warranty.

The VIP Warranty does not cover loss, theft, deliberate damage or cosmetic damage that does not hinder the performance of the product.