Vortex Optics

Viper 8x28 Tactical Binocular

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The Viper R/T tactical binocular combines award-winning optics and tactical features to create a tough, durable roof prism binocular-reliable in the worst conditions. XD (extra-low dispersion glass) objective lenses further enhance resolution and deliver the true-to-life color accuracy so essential for identifying targets. Law enforcement and hunters can range objects of known dimension with the R/T Ranging reticle, which features four silhouettes to serve as a secondary ranging aid.

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Product Details

**Shipping Information: Currently, this item doesn’t ship outside of the United States, to APO/FPO addresses, or PO Box addresses. We’re very sorry for this inconvenience.**


  • 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.
  • Dielectric Prism Coatings Multi-layer prism coatings provide bright, clear, color-accurate images.
  • Phase Correction Coating on roof prism models enhances resolution and contrast.


  • Roof Prism Valued for greater durability and a more compact size.
  • 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.
  • ArmorTek Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt.
  • Rubber Armor Provides a secure, non-slip grip, and durable external protection.


  • Adjustable Eyecups Fold up and down for comfortable viewing with or without eyeglasses.
  • Center Focus Wheel Adjusts the focus of both binocular barrels at the same time.
  • Diopter Adjusts for differences in a user's eyes. Located on right eyepiece.


  • Magnification 8 x
  • Objective Lens Diameter 28 mm
  • Eye Relief 20 mm
  • Exit Pupil 3.5 mm
  • Linear Field of View 319 feet/1000 yards
  • Angular Field of View 6.1 degrees
  • Close Focus 7.5 feet
  • Interpupillary Distance 56-73 mm
  • Height 4.7 inches
  • Width 4.5 inches
  • Weight 11.8 ounces