Diamondback Tactical 4-12x40

Tactical 4-12x40

VMR-1 (MOA) Reticle | 1 inch Tube
Diamondback Tactical 4-12x40 is rated 4.8 out of 5 by 163.
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MSRP $349.99


Exposed tactical turrets built for dialing elevation and windage allow quick and precise bullet drop and wind drift compensation at extended ranges. When we say precise - we mean it. These turrets track better than any Bloodhound and reliably return to zero every time. A zero-reset feature lets you re-index the zero reference marks on both turrets after sight in, while fiber optic rotation indicators integrated into the turrets provide a visual cue of your turret’s position.

Diamondback Tactical 4-12x40 Dimensions (in inches)
Product Dimensions
L1 L2 L3 L4 L5 L6
14.08 1.9 2.15 5.3 5.3 3.43
H1 H2
1.86 1.71
Included in the Box
  • Lens covers
  • Lens cloth
Magnification 4-12x
Objective Lens Diameter 40 mm
Eye Relief 3.9 inches
Field of View 23.6-7.9 ft/100 yds
Tube Size 1 inch
Turret Style Tactical
Adjustment Graduation 1/4 MOA
Travel Per Rotation 12 MOA
Max Elevation Adjustment 70 MOA
Max Windage Adjustment 70 MOA
Parallax Setting 100 yards
Length 14.08 inches
Weight 17.5 oz
Reticle Manual (PDF) Download
Product Manual (PDF) Download
Parts Diagram (PDF) Download
Vortex Lifestyle Image




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.


Tube Size 1 inch diameter tube offers a versatile blend of adjustment, size and weight for a wide variety of shooting applications.
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 Nitrogen 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.
Precision-Glide Erector System This system ensures the components in the zoom lens mechanism glide smoothly and cleanly through all magnification ranges.
Exposed Tactical-Style Turrets Provide fast, accurate and easily read elevation and windage adjustments.


Fast Focus Eyepiece Allows quick and easy reticle focusing.
Radius Bar Fiber optic turret rotation indicator provides a highly visible and tactile point of reference for turret rotations.
Magnification Rib The raised rib on the magnification ring facilitates fast magnification changes in the heat of action.



Designed to maximize long distance shooting and ranging abilities, the VMR-1 MOA reticle can be used to effectively determine ranges, holdovers, windage corrections and moving target leads.

Subtension detail for the Diamondback Tactical 4-12x40 riflescope with VMR-1 reticle.



Rated 5 out of 5 by from Perfect scope Last fall my my wife and I had the opportunity to go hunting antelope for the first time. About a week before the hunt started the scope on my wife’s gun broke and I had to replace it fast. I ordered a diamondback tactical 4-12 and told the folks I was on a real crunch for time and they helped me out big time. I had the scope fast and we got it set up in time to go out opening day. The scope zeroed fast and and held true. As we’ve played around with it it tracks great and is very clear. I’ve shot out to 700 yards with it and been on an 18 inch plate every time. This is one of the best optics I’ve ever played with for the price point. Can’t recommend higher.
Date published: 2018-03-29
Rated 5 out of 5 by from Best bang for your buck My whole goal was to build a hybrid precision rifle that I could take to the range and fill my seasonal hunting tag for under 1k. I've been a Vortex customer for a long time and my center focus of this build was which optic will I choose? Knowing the quality of the diamondback product line, when I saw the features of the diamondback tactical, I knew it was the best of both worlds for tactical precision and quality. Mounted on a Ruger Predator in 308 with Viper rings, this setup is the best bang for your buck and I highly recommend all Vortex products to everyone I know. Great job guys!
Date published: 2018-03-28
Rated 5 out of 5 by from Great value at this price range. Been debating on a scope for awhile now and what I wanted in it. After much thinking and a few words with my local Shop, I’ve decided to go with the Diamondback tactical over the crossfireII and other scopes on the market as to where a friend stuck with the crossfireII (Both of us were lookin for scopes at the same time) and man I’m so glad I went with this scope, Solid clicks and easy adjustment, love the oversized knobs and make adjusting a breeze. Glass is clear and crisp. Very sweet scope for the Price. Obviously it’s got a fixed parallax and no objective focus but at this price point it does not bother me at all. Just takes a little more work and it’s good.
Date published: 2018-03-08
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