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Vortex Diamondback 3-9x40mm Scope – Multiple Options



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Vortex Diamondback 3-9x40mm Scope

The Vortex Diamondback 3-9x40mm Scope completely changes the rules when it comes to “you get what you pay for.” This Second Focal Plane scope features a fully multi coated lens to increase the light transmission with multiple anti reflective coatings and on all air to glass surfaces. The single piece 1 inch tube offers a versatile blend of adjustment, size and weight for a wide variety of shooting applications.  The Diamondback is built from Aircraft Grade Aluminum with a Hard Anodized finish, and has a waterproof o-ring seal to prevent moisture and debris from penetrating. It is fog proof and shockproof, making this scope perfect for any weather conditions.

Vortex Diamondback 3-9x40mm Scope Features

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

1 inch diameter tube offers a versatile blend of adjustment, size and weight for a wide variety of shooting applications.

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.


O-ring seals prevent moisture, dust and debris from penetrating for reliable performance in all environments.


Argon gas purging prevents internal fogging over a wide range of temperatures.


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.

Capped Reset Turrets

Allow quick re-indexing of the turret (no tool needed) to zero after sighting in the riflescope. Caps provide external protection for turret.

Precision Glide Erector System

This system ensures the components in the zoom lens mechanism glide smoothly and cleanly through all magnification ranges.

Fast Focus Eyepiece

Allows quick and easy reticle focusing.

Product Manual

Parts Diagram


L1 11.61
L2 2.0
L3 2.1
L4 5.4
L5 3.07
L6 3.1
H1 1.89
H2 1.69



Magnification 3-9x
Objective Lens Diameter 40 mm
Eye Relief 3.3 inches
Field of View 44.6-14.8 ft/100 yds
Tube Size 1 inch
Turret Style Capped
Adjustment Graduation 1/4 MOA
Travel Per Rotation 15 MOA
Max Elevation Adjustment 70 MOA
Max Windage Adjustment 70 MOA
Parallax Setting 100 yards
Length 11.61 inches
Weight 14.4 oz