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Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane (SFP), Color: Black, Tube Diameter: 1 in w/ Free Shipping — 2 models

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Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, w/ Vortex Defender Flip Cap, DBK-03-BDC-KIT1
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, w/ Vortex Defender Flip Cap, DBK-03-BDC-KIT1
Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
1 of 3 videos
Why I Chose Vortex Diamondback Rifle Scope
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Vortex Diamondback Rifle Scope
3 of 3 videos
Vortex Diamondback 3.5-10x50 Matte Plex Rifle Scope
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
1 of 12 images
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, w/ Vortex Defender Flip Cap, DBK-03-BDC-KIT1
2 of 12 images
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, w/ Vortex Defender Flip Cap, DBK-03-BDC-KIT1
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
3 of 12 images
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
4 of 12 images
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
5 of 12 images
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
6 of 12 images
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
7 of 12 images
Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
8 of 12 images
Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
9 of 12 images
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
10 of 12 images
Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, w/ Vortex Defender Flip Cap, DBK-03-BDC-KIT1
11 of 12 images
Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, w/ Vortex Defender Flip Cap, DBK-03-BDC-KIT1
Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC
12 of 12 images
Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC

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Questions & Answers
please explain what a second focal plane is. Manufacturer Answer

Second focal-plane, which is typically found in moderately powered hunting optics like the Diamondback 3.5-10x50, will allow for a very visible reticle at any magnification, but one that would require the user to be on what is known as the "subtension magnification", in this case 10x, for using any subtensions below, above, or to the sides of the center intersection as designed. In short, their values are only accurate at this subtension value, and in the case of this optic at 10x, they would be 1.5, 4.5, 7.5, and 11MOA as measured from the center on the vertical, and 2MOA each as measured from the center on the horizontal. Because these optics are typically utilized as hunting optics, and for ranges from 100 - 500 yards, we can typically assume that for shots at the longer ranges, higher magnification would be utilized, and there should be little worry about being off of that subtension magnification for accurate holdovers, and conversely, shorter distance shots would allow for demagnifying - but still requiring a highly visible reticle - which the second focal-plane offers.

For contrast, a first focal-plane reticle scales in-time with magnification change, keeping those subtension values accurate at any magnification - however - it will appear as if the reticle is growing and shrinking with magnification change. On a high-magnification optic - say 6-24x50 - this is often seen as advantageous, as it allows the user to utilize holdovers at any magnification at which he or s...

Read More... by Vortex, Manufacturer, October 11, 2023
See 1 More Answer
Where is this scope made? Expert Answer

The Diamondback scopes are produced in China.

by Bethany Kopel, Gear Expert, December 16, 2020
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Well Deserved 5 Stars. by Legacy Reviewer, June 14, 2012
I have had this Vortex scope mounted on a Remington 700 LA in .30-06. I used the DNZ Game Reaper mount also purchased from Optics Planet to create a rock solid platform. Anything stronger would require welding IMHO. I feel this is the Best Hunting...
Read More...
55/55 found this helpful
Helpful Positive Review
To The Nay Sayers by mickiefree, July 29, 2018
I own two Vortex Scopes, a DiamondBack 3.5-10x50 & a Crossfire II 3-9x40. I'm very pleased with both of these scopes, no complaints. I've read several reviews on Vortex Product where the purchasers were complaining about the glass was fuzzy at full p...
Read More...
30/30 found this helpful
Helpful Positive Review
Diamondback by Mtnmike, Verified Owner, December 13, 2024
Although I've not had it in the field yet after mounting and sighting in I've been very pleased with the scope. Optics are clear, I like the cross hairs, it's lightweight, if I have one complaint it be the cheapest scope cover they could put on it bu...
Read More...
1/1 found this helpful
Helpful Positive Review
Great scope by Legacy Reviewer, Verified Owner, August 30, 2013
I would't take this review to heart all the way this is my first scope I have bought, I am x-military tho, This scope has great eye relief, lets a lot of light in and just seems better vision than the naked eye. the adjusters are very smooth. All ar...
Read More...
5/5 found this helpful
Helpful Positive Review
Excellent scope by fred, July 23, 2014
Mounted on Savage Model 116 .270 Win. Have shot roughly 700 rounds through this gun in a little more than 2.5 years. 2 of those years were with this scope. Having hunted from dark to dark I have to say this is a great scope and for the price range o...
Read More...
6/6 found this helpful
Helpful Positive Review
Vortex Diamondback 3.5-10x50 Riflescope by Bill, Verified Owner, November 3, 2014
You certainly can spend more for a riflescope but you may be wasting some of your hard earned money. This is a very versatile scope that can be used with various calibers. The 50mm objective lens comes in handy when your at that +200yd range and you...
Read More...
8/8 found this helpful
Read All 91 Reviews
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Product Info for Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane (SFP)

The Vortex Diamondback 3.5-10x50mm Rifle Scope is ideal for when you spend time hunting in low light. These Rifle Scopes have pop-up dials that provide easy, precise adjustment for elevation and windage, making audible clicks that are easily and quickly counted. Vortex Optics knows good hunting gets all the better with high quality optics. The Vortex Diamondback 3.5-10x50mm Plex Rifle Scope is built around a durable 1" tube constructed of 6061 T6 aircraft-grade aluminum. All scopes are subjected to demanding factory testing under a force of 1000 G's 500 times! Not only is this rifle scope waterproof and fogproof, it is highly prized for its purging with Argon gas to eliminate internal fogging. Count on the Vortex Diamondback 3.5-10x50mm Shockproof Rifle Scope for smooth handling when the heat is on.image

Specifications for Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane (SFP):

Manufacturer: Vortex
Objective Lens Diameter: 50 mm
Magnification: 3.5 - 10 x
Reticle: Dead-Hold BDC
Tube Diameter: 1 in
Reticle Focal Plane: Second Focal Plane (SFP)
Exit Pupil: 5 - 14.29 mm
Illumination Color: None
Finish: Hard Anodized
Field of View, Linear: 13.5 - 35.8 ft at 100 yds
Eye Relief: 3.3 - 3.6 in
Color: Black
Weight: 15.5 oz
Adjustment Click Value: 1/4 MOA
Length: 12.4 in
Adjustment Type: MOA
Parallax: 100 yds
Illumination Type: Non-Illuminated
Width: 3.13 in
Fabric/Material: Aircraft Grade Aluminum
Adjustment Range: 65 MOA
Height: 2.29 in
Focus Range: 100 yds to infinity
Lens Material: Glass
Optical Coating: Fully Multi-Coated
Battery Life: 150 hours
Weather Resistance: Yes
Water Resistance Level: Waterproof
Shockproof: Yes
Fogproof: Yes
Package Type: Box
Magnification Type: Variable
Condition: New
W/E Travel at 100 Yds: 65/65 MOA
Attachment Type: Riflescope Ring

Features of Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane (SFP)

  • Fully Multi-Coated
  • Rugged construction withstands recoil and impact.

Package Contents:

  • Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane (SFP)
  • Removable lens covers
  • Lens cloth

Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane (SFP) Orderable Models

List of Orderable Models

  • Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, 12.5in, 15.5oz, DBK-03-BDC , MPN: DBK-03-BDC , UPC: 875874001145 , Code: VX-RS-D300-DBK-03-BDC
  • Vortex Diamondback 3.5-10x50 mm Rifle Scope, 1 in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, w/ Vortex Defender Flip Cap, DBK-03-BDC-KIT1 , MPN: DBK-03-BDC-KIT1 , Code: VX-RS-D300-DBK-03-BDC-KIT1

Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane (SFP) Unavailable & Discontinued Models

List of Unorderable Models

  • Refurbished, Vortex Diamondback 3.5-10x50 Matte Plex Rifle Scope - DBK-M-03P , MPN: DBK-M-03P-REFURB , Code: VX-RS-D300-DBK-M-03P-REFURB
  • Vortex Diamondback 3.5-10x50 Matte Plex Rifle Scope - DBK-M-03P , MPN: DBK-M-03P , UPC: 875874000872 , Code: VX-RS-D300-DBK-M-03P
  • USED Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC, EDEMO1, Condition Fair, Other , MPN: DBK-03-BDC-EDEMO1 , Code: VX-RS-D300-DBK-03-BDC-EDEMO-OT-D
  • Vortex Diamondback 3.5-10x50 Matte Plex Rifle Scope - DBK-M-03P w/Vortex Defender Flip Cap Objective Lens 50,55-59 mm, Black O-50 DBK-M-03P , MPN: DBK-M-03P-KIT1 , Code: VX-RS-D300-DBK-M-03P-KIT1
  • Vortex Diamondback 3.5-10x50 Matte Rifle Scope with Mount and Flip Cap KIT , MPN: DBK-M-03P-KIT2 , Code: VX-RS-D300-DBK-M-03P-KIT2
  • Refurbished, Vortex Diamondback 3.5-10x50mm Rifle Scope, 1in Tube, Second Focal Plane, Black, Hard Anodized, Non-Illuminated Dead-Hold BDC Reticle, MOA Adjustment, DBK-03-BDC , MPN: DBK-03-BDC-REFURB , Code: VX-RS-D300-DBK-03-BDC-REFURB
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