Vortex Diamondback 4-12x40 Riflescope

Item No. 87587400115
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Product Description


The Vortex® Diamondback 4–12x40 Riflescope is loaded with features to provide precision aim during a variety of hunts. This Vortex® scope features a single-piece tube constructed with aircraft-grade aluminum for enhanced strength and durability. Fully multi-coated lenses increase light transmission for a bright, clear sight picture, while the fast-focus eyepiece allows for quick focus control. This hunting scope has a Dead-Hold BDC reticle designed to offer accurate windage and bullet drop compensation. Waterproof, fogproof, and shockproof, the Vortex® Diamondback 4–12x40 Scope offers reliable holdover estimation and accurate aim for more success in the field.


  • Fast-focus eyepiece
  • Waterproof, fogproof, and shockproof
  • Capped reset turrets allow quick re-indexing to zero
  • Dead-Hold BDC reticle with a customized dot design
  • Precision-glide erector system ensures smooth zoom
  • Fully multi-coated lenses for increases light transmission
  • Single-piece tube offers maximum alignment and accuracy
  • Aircraft-grade aluminum construction with a hard-anodized finish


  • Model #: DBK-04-BDC
  • Magnification: 4–12x
  • Objective Lens Diameter: 40mm
  • Length: 12 in.
  • Weight: 14.6 oz.
  • Eye Relief: 3.1 in.
  • Tube Diameter: 1 in.
  • Turret Style: Capped
  • Parallax Setting: 100 yds.
  • Field of View: 32.4–11.3 ft./100 yds.
  • Travel per Rotation: 15 MOA
  • Adjustment Click Value: 1/4 MOA
  • Max Windage Adjustment: 60 MOA
  • Max Elevation Adjustment: 60 MOA


  • Lens cloth
  • Removable lens covers

Customer Reviews

5.0 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Really like it
My husband loves it
February 7, 2020
6 months ago
Very clear scope one of the best I’ve ever had on a rifle
November 23, 2018
1 year ago
I will buy this again.
The reticle is really nice for wind and elevation. It is also easy to adjust. The zoom is good for about 300-400 yards.
May 4, 2018