Vortex Optics Diamondback SFP Riflescope
- Objective Lens Diameter: 40 mm
- Mounting Type: Weaver Mount
- Material Type: Aluminum
- Warranty Description: Limited lifetime
Last refreshed Jun 22, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A durable, sealed hunting scope built around a hold-over reticle and backed by an unconditional lifetime warranty, aimed at field use rather than precision long-range dialing.
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ASIN: B001EC7KMYCategory: Rifle Scopes
Overview
A second focal plane, 1 inch tube riflescope from Vortex's Diamondback line, spec'd here in a 4-12x40 configuration with the Dead-Hold BDC reticle. Built with a hard-anodized one-piece tube and metal turrets, backed by Vortex's transferable VIP warranty.
The Diamondback name covers several magnification and reticle configurations, and the spec sheet for this listing points to a 4-12x40 with the Dead-Hold BDC reticle, built for holding over at different ranges rather than dialing turrets for every shot. Being second focal plane, the reticle stays the same size as magnification changes, so BDC holdover marks are calibrated for one setting, typically the top end.
- 1 inch one-piece, hard-anodized tube
- Dead-Hold BDC reticle for holdover shooting
- Argon purged, o-ring sealed for waterproof and fogproof use
- Vortex VIP unlimited, unconditional, transferable warranty
Who it's for
Suited to hunters wanting a mid-range variable scope with a hold-over reticle for shots at varying distances, and to anyone who values a fully transferable lifetime warranty over ultra-precision features. Long-range target shooters needing first focal plane consistency across the zoom range should look at a different model.
Pros and cons
- Metal one-piece tube resists shock and fogging
- Fast focus eyepiece for quick reticle adjustment
- Turrets zero-reset after sight-in
- Backed by transferable, unconditional lifetime warranty
- BDC holdovers apply at one magnification only
- Reticle option and exact magnification vary by listing configuration
Performance notes
The tube is a single piece of hard-anodized metal, argon purged and o-ring sealed, which is what gives it the fogproof and waterproof rating. Lenses are fully multi-coated for light transmission, the eyepiece has a fast focus ring for quick reticle adjustment, and the turrets are metal on metal with a zero-reset feature so you can return to a known zero after sighting in.
Where it stands among rifle scopes
- #1 most-searched brand and model of the 79 rifle scopes lines we track (by search demand, not sales).
From the specs of the 446 rifle scopes we list; not a test result.
Specifications
| Brand | Vortex |
|---|---|
| Dimensions & fit | |
| Objective Lens Diameter | 40 mm |
| Item Weight | 0.91 poundslower than 84% of 238 rifle scopes |
| Item Display Weight | 14 pounds |
| Item Dimensions L X W X H | 12 × 2.5 × 2.5 inches |
| Hand Orientation | Ambidextrous |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Black |
| Lens Color | Clear |
| Compatibility & installation | |
| Mounting Type | Weaver Mount |
| Compatible Devices | Rifle |
| Included components | |
| Unit Count | 1 |
| Warranty & support | |
| Warranty Description | Limited lifetime |
| Other details | |
| Sport Type | Hunting & Shooting |
| Reticle Type | BDC |
| Number Of Items | 1 |
| Item Type Name | Riflescope |
| Eye relief | 79 |
| League Name | Fantasy Leagues |
| Field Of View | 32.4 feet |
Closest rivals on specs
Frequently asked questions
What reticle does the Vortex Diamondback DBK-04-BDC use?
It uses the Dead-Hold BDC reticle, designed for holding over at varying distances instead of dialing turrets for each range.
Is this Diamondback scope first or second focal plane?
Second focal plane, meaning the reticle size stays fixed as you change magnification rather than scaling with the image.
What does the Vortex VIP warranty cover?
An unlimited, unconditional, transferable lifetime promise to repair or replace the scope if damaged or defective, excluding loss, theft or deliberate damage.