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Vortex Diamondback 3-9x40 Matte Plex Riflescope, DBK-M-01P
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$249.99
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SKU: DBK-M-01P-875874000865
Overview
Built for hunters who want a practical optic for general big-game use, this 3-9x40 scope pairs a versatile magnification range with a 40 mm objective and a simple Plex reticle. It includes fully multi-coated glass, a second focal plane reticle, capped reset turrets, and a fast-focus eyepiece for straightforward setup and adjustment in the field. The single-piece tube is made from aircraft-grade aluminum and is listed as waterproof, fogproof, and shockproof, with a hard anodized finish for added durability. At 11.7 inches and 14.4 oz, it stays compact enough for a hunting rifle without adding unnecessary bulk.
Why Hunters Choose the Vortex
3-9x Magnification
Suits a wide range of
40 Mm
Objective lens supports a versatile,
Fully Multi-coated
Optics are listed for improved
Fast-focus Eyepiece
Allows quick reticle adjustment
Capped Reset
Turrets help protect adjustments in
Key Features
- 3-9x magnification with a 40 mm objective lens for versatile hunting use
- Second focal plane reticle for a familiar sight picture across the magnification range
- Fully multi-coated optics to support clear image quality
- 1-inch single-piece tube made from aircraft-grade aluminum
- Waterproof, fogproof, and shockproof construction for field use
- Capped reset turrets with 1/4 MOA adjustment graduation
- Fast-focus eyepiece and included removable lens covers
Best Used For
- General-purpose deer hunting with a versatile 3-9x magnification range and 40 mm objective lens.
- Hunters wanting a second focal plane scope with capped reset turrets and fast-focus eyepiece.
- Rifle setups needing a 1-inch, single-piece tube with waterproof, fogproof, and shockproof construction.
- Field use where fully multi-coated optics and included lens covers support practical, everyday handling.
- Shooters seeking a hunting scope with straightforward adjustment features and a matte finish.
Specifications
| Adjustment Graduation | 1/4 MOA |
|---|---|
| Blade Finish | Matte |
| Coating | Fully Multi-Coated |
| Erector System | Precision-Glide Erector System |
| Eye Relief | 3.3 inches |
| Eyepiece | Fast Focus Eyepiece |
| Field Of View | 44.6-14.8 ft/100 yds |
| Focal Plane | Second Focal Plane |
| Fogproof | Yes |
| Included Accessories | Removable lens covers; lens cloth |
| Length | 11.7 inches |
| Magnification | 3-9x |
| Material | Aircraft-Grade Aluminum |
| Max Elevation Adjustment | 70 MOA |
| Max Windage Adjustment | 70 MOA |
| Objective Lens Diameter | 40 mm |
| Parallax Setting | 100 yards |
| Reticle | Plex |
| Shockproof | Yes |
| Travel Per Rotation | 15 MOA |
| Tube Construction | Single-Piece Tube |
| Tube Size | 1 inch |
| Turret Style | Capped |
| Turrets | Capped Reset Turrets |
| Waterproof | Yes |
| Weight | 14.4 oz |
Pros
- 3-9x magnification suits a wide range of hunting distances.
- 40 mm objective lens supports a versatile, compact scope setup.
- Fully multi-coated optics are listed for improved image quality.
- Fast-focus eyepiece allows quick reticle adjustment.
- Capped reset turrets help protect adjustments in the field.
- Waterproof, fogproof, and shockproof construction adds durability.
Considerations & Trade-offs
- The 3-9x magnification range is versatile for general hunting, but it does not provide the reach of higher-magnification scopes for longer-distance work.
- The second focal plane reticle keeps the reticle size constant, which is straightforward to use, but it does not scale with magnification changes.
- Capped reset turrets favor a low-profile, protected setup over frequent on-the-fly dialing, so they are less suited to constant elevation or windage adjustments in the field.
- The parallax setting is fixed at 100 yards, so it is a better fit for typical hunting distances than for applications that require parallax adjustment at varying ranges.
Suggested Comparisons
- Hunting riflescope
- Variable-power riflescope
- Second focal plane riflescope
- Budget-to-midrange optics
Suggested Accessories
- Riflescope rings
- Lens cleaning kit
- Scope mount
- Flip-up lens covers
Frequently Asked Questions
Is the Diamondback 3-9x40 a first focal plane or second focal plane scope?
It uses a Second Focal Plane reticle.
What magnification range does this riflescope offer?
The magnification range is 3-9x.
What size objective lens and tube does it use?
It has a 40 mm objective lens and a 1-inch tube size.
Are the turrets exposed or capped?
The scope uses capped reset turrets.
What accessories come in the box?
Included accessories are removable lens covers and a lens cloth.