Vortex Diamondback 4-12x40 AO Scope with Dead-Hold BDC Reticle
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Vortex Diamondback 4-12x40 AO Scope with Dead-Hold BDC Reticle

Product Information:

Increase your effectiveness on every hunt with the affordable performance of the Diamondback AO Scope. The multiple anti-reflective coatings give you a bright and detailed image, while the Dead-Hold BDC reticle helps you adjust your aim for range, holdover and wind drift. Ruggedly built, the Vortex7reg; Diamondback AO 4-12x40 Scope is constructed from a single piece of aluminum and sealed with argon for waterproofness and anti-fogging.

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  • Second focal plane Dead-Hold BDC reticle helps estimate range, holdover and wind drift correction accurately at the highest magnification
  • Constructed from a single piece of aircraft-grade aluminum for performance and durability
  • Multiple anti-reflective lens coatings for increased light transmission
  • Capped reset turrets allow re-indexing of the turret to zero
  • Precision-Glide Erector System provides smooth magnification changes even in harsh conditions
  • Fast Focus Eyepiece permits fast reticle focusing
  • O-ring seals lock out moisture, dust and debris
  • Argon gas purging prevents fogging
  • Low-glare, matte finish disguises shooting position
  • Includes removable lens covers and lens cloth
  • Manufacturer’s Unlimited Lifetime Warranty
  • Model: DBK-412B
  • Vortex Optics


  • Length: 12.8”
  • Tube Length: 5.5”
  • Tube Diameter: 1”
  • Magnification: 4-12x
  • Objective Lens Diameter: 40mm
  • Eyepiece Length: 3.1”
  • Eyepiece Diameter: 1.69”
  • FOV at 100 Yards: 32.4-11.3’
  • Eye Relief: 3.1”
  • Parallax Setting: 10 yds. to infinity
  • Adjustment Graduation: 1/4 MOA
  • Max Elevation Adjustment: 60 MOA
  • Max Windage Adjustment: 60 MOA
  • Weight: 17.2 oz.
  • Brand: Vortex
  • Country of Origin: Imported