Vortex Optics Viper HS 4-16x50 SFP Riflescope: 30mm Tube, Dead-Hold BDC (MOA) Reticle, Model VHS-4307

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.

Reticle

• Dead-Hold BDC (MOA)
  Customized hashmark design helps eliminate guesswork on holdover and windage corrections. Good for hunting/shooting at varying ranges where estimating holdover is a concern.

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 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.
• Tactical Elevation Turret: Exposed elevation turret provides fast, accurate and easily read elevation adjustments. Capped windage turret.
• 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 FEATURES

• 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 FEATURES

• 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.