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Vortex Diamondback 3-9x40 SFP Riflescope Dead-Hold BDC MOA DBK-01-BDC
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$249.99
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SKU: DBK-01-BDC-875874001138
Overview
Built for hunters who want a straightforward optic for close to mid-range shooting, this scope pairs a 3-9x magnification range with a 40 mm objective and a Dead-Hold BDC MOA reticle for practical holdover use. The one-piece aluminum construction, Argon gas purging, and fully multi-coated lenses are aimed at keeping the optic ready across changing conditions, while capped turrets and pop-up adjustment dials support simple zeroing and field adjustments. With 3.3 inches of eye relief and a 1-inch tube, it suits rifles set up for general hunting applications where a dependable, uncomplicated sight picture matters. Protective lens covers are included for added day-to-day protection during transport and storage.
Why Hunters Choose the Vortex
One-piece Aircraft-grade
Aluminum alloy construction adds strength
Argon Purging
Helps reduce internal fogging across
Fully Multi-coated
Optics are listed at 91%
Pop-up Windage
Elevation dials support quick, easy
Protective Lens
Covers are included for added
Key Features
- 3-9x magnification with a 40 mm objective lens for versatile rifle use.
- Second focal plane design with Dead-Hold BDC MOA reticle.
- One-piece aircraft-grade aluminum alloy construction.
- Argon gas purged to help prevent internal fogging.
- Fully multi-coated optics with 91% light transmission.
- Pop-up windage and elevation dials for quick adjustments.
- Protective lens covers included.
Best Used For
- Hunters wanting a versatile 3-9x scope for general big-game rifle setups
- Users who prefer capped turrets and straightforward windage and elevation adjustments
- Rifles needing a compact 1-inch tube optic for standard hunting configurations
- Shooters who want included protective lens covers for transport and storage
- Hunters operating across changing temperatures where fogging protection matters
Specifications
| Construction | One-piece aircraft grade aluminum alloy |
|---|---|
| Eye Relief | 3.3 inches |
| Field Of View | 44.6-14.8 feet/100 yards |
| Focal Plane | Second Focal Plane |
| Gas Purged | Argon |
| Length | 11.7 inches |
| Lens Coating | Fully multi-coated |
| Lens Covers Included | Yes |
| Light Transmission | 91% |
| Magnification | 3-9x |
| Objective Lens Diameter | 40 mm |
| Parallax Setting | 100 yards |
| Reticle | Dead-Hold BDC MOA |
| Tube Size | 1 inch |
| Turret Style | Capped |
| Weight | 14.4 ounces |
| Windage And Elevation Dials | Pop-up |
Pros
- One-piece aircraft-grade aluminum alloy construction adds strength for hard-recoiling rifles.
- Argon purging helps reduce internal fogging across a wide temperature range.
- Fully multi-coated optics are listed at 91% light transmission.
- Pop-up windage and elevation dials support quick, easy adjustments.
- Protective lens covers are included for added lens protection.
- 3-9x magnification and 40 mm objective suit versatile hunting use.
Considerations & Trade-offs
- 3-9x magnification is a practical hunting range, but it does not offer the close-up speed of a true low-power optic or the reach of higher-magnification scopes.
- The 40 mm objective keeps the profile manageable, though it is not as large as some light-gathering-focused hunting scopes.
- Capped turrets are simple and protected, but they are less suited to frequent dial adjustments in the field.
- Parallax is set at 100 yards, so this scope is most straightforward for use around that distance rather than for constant close-range or long-range dialing changes.
Suggested Comparisons
- Rifle scopes with BDC reticles
- 3-9x hunting scopes
- 40 mm objective scopes
- Capped turret rifle scopes
Suggested Accessories
- Scope rings
- Lens cleaning kit
- Rifle scope cover
- Flip-up lens caps
Frequently Asked Questions
Is this Diamondback scope a first or second focal plane model?
This model is listed as SFP, or second focal plane.
What magnification range does it offer for hunting use?
The listed magnification is 3-9x.
Does it include a BDC reticle?
Yes. The product title identifies it as a Dead-Hold BDC MOA model.
What adjustments and turret style does it use?
The specifications list capped turrets, and the windage and elevation dials pop up for fast and easy adjustments.
What should I know about the scope’s size and mounting setup?
The scope has a 1-inch tube, a 40 mm objective lens, a listed length of 11.7 inches, and a weight of 14.4 ounces.