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Vortex Diamondback 4-12x40 AO Rifle scopes
$299.00 $359.00 Save 17%
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(19 reviews)
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Most Helpful Positive Review Good scope for the price!
Good image quality, and positive click adjustments that tracked correctly. ...
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Most Helpful Negative Review Doesn't like recoil
Becareful about installing this on a rifle with significant recoil...300 Wi...
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Vortex Diamondback 4-12x 40 BDC

by Mike, from United States, UT Written on March 17, 2015
Execellent scope for the money (as expected from Vortex) dialed in and zeroed at 100 yards in 5 shots or so (I'm not a very experienced shooter so this may be better in experienced hands).

Optics Planet's service was great also, they worked with me over the phone to get me into the right product and delivery was early. Will buy again!...
Pros:
  • Clear reticle
  • heavy duty construction
  • positive turret clicks
  • affordable price
Cons:
  • none yet
Best Used for:
  • Entry level/budget shooter
Would recommend: Yes
0 of 0 found the following review helpful.
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Defective / Inaccurate Objective Bell / Poor Eyebox / The Build & Performance Do Not Match The Price

by therock, from United States, GA Written on February 28, 2015
I give two stars, one for the appearance design, and the other for the reticle design.

I can only imagine whomever is responsible for “this scope’s” performance does not, or has never used a rifle scope that works as it should.
The first sign of trouble came after setting the eyepiece focus I viewed an object at a measured 50 yard distance, adjusted the objective ring to obtain focus, and it was on the 100+ yard marker and it would vary in repeated attempts. I tested this at various magnifications and it varied and sometimes it would come closer which indicates to me I had a bad copy.

The Eye-box performance is totally unforgiving. You have to align your eyes and head exactly in the side to side & fore and aft positions to keep an clean full field of view while set to the medium to upper magnification ranges. This is the kind of trait I would expect in a cheap-o optic that came with a budget rifle in a combo package.

The resettable turrets.... On one of them the hash marks do not align landing them exactly in between.

The build. It’s a nice looking scope. There is a + / - sticker on the fast focus eyepiece that looks like it will roll up or come off any minute. I guess they forgot adding it on the last minute. Everything else is clearly marked. When you turn the objective ring it can be heard like a fine hiss.

I returned the scope for an exchange fr one at the same price point I know will perform for what it is worth or more. A Leupold VARI-X 1 3-9x40 fixed AO.

Thank ...
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Pros:
  • Looks nice
Cons:
  • None
Would recommend: Yes
0 of 0 found the following review helpful.
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Vortex Diamondback Works for Me

by Pete, from United States, VA Written on February 21, 2015
I was looking for a mid-priced scope with good glass and a reticle set up which would allow me to shoot various ranges by applying holdover or adjusting my elevation for longer ranges -- I found it.

This scope provides me with the reticle set up and sufficient magnification to shoot to extended ranges with relative ease. The reticle allows me to make quick adjustments for three elevations (MOAs) and the elevation turret offers plenty of travel to suit my needs for longer range compensation. There are also hash-marks for windage adjustment too.

The glass is nice and clear. Focus is clear and I can adjust the AO to compensate for parallax at various ranges.

Overall I've had a good experience with this scope and I consider it an excellent value....
Pros:
  • Good glass, good clarity, Good reticle, parallax adjustable
Cons:
  • Number on turrets smallish
Best Used for:
  • Target/ Range
  • Hunting/Target
Would recommend: Yes
0 of 0 found the following review helpful.
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DIAMONDBACKS ROCK !!!!!!!!!!!

by TOOTY, from United States, IL Written on November 13, 2014
JUST received my second Diamondback and just ordered the Viper model soon to arrive. In the old days scopes of this quality were very expensive and not anymore . I"m so pleased with the clarity , it's staggering to me that ya can get this kind of quality at an affordable price....
Optics Planet made my day again and JENNA is a star there . She is so helpful it keeps bringing me back to them and will continue to do so for all my optics needs and wants.....
THANKS SO MUCH "OP" YA MADE AND OLD MANS DAY......
TOOTY...
Best Used for:
  • hunting, range shooting
Would recommend: Yes
0 of 1 found the following review helpful.
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Great for high powered spring pellet guns

by Legacy Reviewer, Verified Owner from United States, AZ Written on March 11, 2014
Needed an adjustable objective (down to 10 yards and out to 100+) scope that has a lifetime warranty (springers eat scopes) and excellent picture quality for a high powered spring pellet gun. This one fit the bill. I am very pleased, though a bit pricey when you add the AO ($100 more than the standard).
Pros: Lifetime warranty. Adjustable objective. Clear.
Cons: A bit pricey when adding the adjustable objective....
Would recommend: Yes
2 of 2 found the following review helpful.
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Solid scope

by Legacy Reviewer, Verified Owner from United States, OK Written on February 20, 2014
Very decent scope for the money. I'm not blown away with this item, like most people that comment on vortex products. Scope adjustments seem accurate and the glass is just as good as a VXII for less $ so I cannot complain. Best warranty in the business so if you don't like it they'll take it back or exchange it for another. Give it a try.
Pros: AO focus down to 10 yards
Cons: Not side focus...
Would recommend: Yes
3 of 3 found the following review helpful.
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Good scope w/ minor flaw

by Legacy Reviewer, Written on September 18, 2013
Overall this is a bright, clear scope that tracks well. The AO and power adjustment rings are smooth and easy to turn.
Pros: Bright, clear, great reticle, tracks well
Cons: Eye placement sensitive at 12x...
Would recommend: Yes
3 of 5 found the following review helpful.
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Diamondback 4x12 AO

by PGB, Verified Owner from United States, UT Written on August 11, 2013
Vortex good value. I have been pleased with all my vortex products crossfire, viper and now diamondback. Great warranty but I haven't had to use it.
Pros: Scope is very clear, great field of view, BDC is referenced in MOA, focuses down to 10yds
Cons: Wish it was side focus....
Would recommend: Yes
3 of 4 found the following review helpful.
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A great BDC for the money

by Legacy Reviewer, Verified Owner from United States, FL Written on March 11, 2013
It seems to be very durable but I havent shot it yet so I wont speak on that part. The glass has good clarity. When up against my Leupold VX-II the clarity is same. The clarity and color gathering ability is better than my Trophy XTL. The Vortex BDC is like a cross between a mil-dot and a BDC. Instead of dots it has hash marks and there are 4 hash marks on the horizontal crosshair instead of the 2 shown in the picture. The adjustable objective lens is nice and works well. It has a good amount of resistance without being overly stiff. Over all its a quality scope for a fair price. If it shoots as good as it looks I wouldnt hesitate to buy another.
Pros: Price and BDC
Cons: None...
Would recommend: Yes
2 of 5 found the following review helpful.
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Great value

by Legacy Reviewer, Verified Owner from United States, AL Written on February 13, 2013
This scope is packed with features and quality that is rarely found in this price range. Combine that with the exceptional warranty and one can't go wrong. ...
Would recommend: Yes
2 of 5 found the following review helpful.
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Comments on 19 User Reviews of Vortex Diamondback 4-12x40 AO Rifle scopes