Vortex Viper HS riflescopes offer 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.
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.
MAG-View Fiber Optic. Provides a highly visible reference point for the magnification setting.
Key Features:

• XD Lens Elements
• Fully Multi-Coated
• Second Focal Plane Reticle
• Single-Piece Tube
• Aircraft-Grade Aluminum
• Waterproof
• Fogproof
• Shockproof
• Fast Focus Eyepiece
• Hard Anodized Finish
• Capped Reset Turrets
• Side Focus
• Precision-Force Spring System
• Precision-Glide Erector System
• MAG-View Fiber Optic

Vortex Optics Viper HS 4-16x44 Dead-Hold BDC (MOA) SFP Riflescope Specifications

• Magnification: 4-16x
• Objective Lens Diameter: 44 mm
• Eye Relief: 4.0 inches
• Field of View: 27.4-7.4 ft/100 yds
• Tube Size: 30 mm
• Turret Style: Capped
• Adjustment Graduation: 1/4 MOA
• Travel Per Rotation: 12 MOA
• Max Elevation Adjustment: 50 MOA
• Max Windage Adjustment: 50 MOA
• Parallax Setting: 50 yards to infinity
• Length: 13.41 inches
• Weight: 19.2 oz

XD Lens Elements
Extra-low dispersion (XD) glass increases resolution and color fidelity, resulting in crisp, sharp images.
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
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.
Capped Reset Turrets
Caps provide external protection for turret.
Side Focus
Adjustment located on left side of turret housing. Provides optimal image focus and parallax removal.