Vortex Diamondback 4-12×40 Riflescope, Dead-Hold BDC MOA Reticle, SFP, 1″ Tube, Matte Black – DBK-04-BDC

The Vortex Diamondback 4-12×40 DBK-04-BDC is a versatile hunting riflescope designed for shooters who need additional magnification without adding excessive size or weight to their rifle. The 4-12x magnification range provides flexibility for hunting across varying terrain and distances.

Vortex’s XD™ Optical System delivers impressive resolution, edge-to-edge sharpness, reduced chromatic aberration, and bright, high-contrast images. Fully multi-coated lenses increase light transmission for improved clarity and low-light performance during early morning and late evening hunts.

The Dead-Hold® BDC MOA reticle is positioned in the second focal plane and provides useful holdover and windage references when shooting at varying distances. Capped turrets help protect adjustments in the field, while 1/4 MOA adjustments allow for precise zeroing.

Built from aircraft-grade aluminum, the Diamondback features a low-glare matte black anodized finish and is argon purged and O-ring sealed for waterproof and fogproof performance. Its lightweight 14.2-ounce design makes it an excellent choice for hunting rifles where dependable performance and manageable weight are important.

Key Features

• 4-12x magnification
• 40mm objective lens
• XD™ Optical System
• Dead-Hold® BDC MOA reticle
• Second focal plane
• 1-inch tube
• Fully multi-coated lenses
• Capped turrets
• 1/4 MOA adjustments
• Fast-focus eyepiece
• Aircraft-grade aluminum construction
• Argon gas purged
• Waterproof
• Fogproof
• Shockproof
• Low-glare matte black anodized finish
• VIP Unlimited Lifetime Warranty

Manufacturer Specifications

Model: Diamondback 4-12×40

Part Number: DBK-04-BDC

Manufacturer: Vortex Optics

Magnification: 4-12x

Objective Lens Diameter: 40 mm

Reticle: Dead-Hold® BDC MOA

Focal Plane: Second Focal Plane

Tube Diameter: 1″

Eye Relief: 3.1″

Field of View: 32.4’–11.3′ @ 100 yds.

Turret Style: Capped

Adjustment Graduation: 1/4 MOA

Travel Per Rotation: 15 MOA

Maximum Elevation Adjustment: 60 MOA

Maximum Windage Adjustment: 60 MOA

Parallax Setting: 100 yds.

Length: 12.0″

Weight: 14.2 oz.

Optical System: XD™

Lens Coating: Fully Multi-Coated

Gas Purging: Argon

What’s Included

• Vortex Diamondback 4-12×40 Riflescope
• Removable Lens Covers
• Lens Cloth

FAQ

What reticle does the Diamondback 4-12×40 use?
This model features the Dead-Hold® BDC MOA reticle with holdover and windage reference points for shooting at varying distances.

Is this a first or second focal plane scope?
It uses a second focal plane reticle.

What size scope rings does it require?
The Diamondback 4-12×40 uses a 1-inch tube and requires compatible 1-inch scope rings.

What is the parallax setting?
Parallax is factory set at 100 yards.

How much does the Diamondback 4-12×40 weigh?
It weighs 14.2 ounces.

Is it designed for hunting?
Yes. Vortex lists hunting as the recommended use for this model.

Brought to you by Black Bayou Armory.