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Delta Optical Stryker HD 3.5-21x44 FFP IR DLR-3 0.1MRAD 34mm Rifle Scope Delta Optical Stryker HD 3.5-21x44 FFP IR DLR-3 0.1MRAD 34mm Rifle Scope Delta Optical Stryker HD 3.5-21x44 FFP IR DLR-3 0.1MRAD 34mm Rifle Scope Delta Optical Stryker HD 3.5-21x44 FFP IR DLR-3 0.1MRAD 34mm Rifle Scope ** FACTORY PRICE DROP ** Delta Optical Stryker HD 3.5-21x44 FFP IR DLR-3 0.1MRAD 34mm Rifle Scope ** FACTORY PRICE DROP ** Delta Optical Stryker HD 3.5-21x44 FFP IR DLR-3 0.1MRAD 34mm Rifle Scope ** FACTORY PRICE DROP ** Delta Optical Stryker HD 3.5-21x44 FFP IR DLR-3 0.1MRAD 34mm Rifle Scope ** FACTORY PRICE DROP ** Delta Optical Stryker HD 3.5-21x44 FFP IR DLR-3 0.1MRAD 34mm Rifle Scope
Delta Optical Stryker HD 3.5-21x44 FFP IR DLR-3 0.1MRAD 34mm Rifle Scope
General UseHunting
Delta Optical
SKU#DO-2525 Delta Optical

** FACTORY PRICE DROP ** Delta Optical Stryker HD 3.5-21x44 FFP IR DLR-3 0.1MRAD 34mm Rifle Scope

4 in stock

"The Stryker HD 3.5-21x44 is a true “do-it-all” optic that balances magnification, clarity, and ruggedness beautifully. This scope fits a broad range of shooting disciplines, from medium-range precision to general field use, and the 44mm objective lens delivers a bright, clear image with excellent depth of field and field of view — two often overlooked but critical attributes when tracking moving targets or scanning terrain. The illuminated reticle is subtle but effective, helping maintain quick target acquisition without washing out the image. With smooth turret action, zero stop, and first focal plane reticle, this scope is ready for PRS matches, hunting trips, or tactical applications. If you want one scope to rule them all for under £2000, the Stryker HD should be at the top of your list." - Thomas (Online Sales Associate & Product Specialist). 

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images/assets/dispatch.svg As soon as your air rifle or pistol is ready for collection we will contact you to arrange a collection time and date. This may take between 3-5 business days. If you're just purchasing a scope, mounts or accessory we aim to dispatch within 1-2 working days. UK delivery only.
Product Information FIND OUT MORE
DESCRIPTION
The Delta Optical Stryker HD 3.5-21x44 FFP IR DLR-3 0.1MRAD 34mm Rifle Scope is the ultimate solution for shooters who demand precision and versatility in one compact package. Designed to bridge the gap between low-power variable optics (LPVO) and first focal plane (FFP) scopes for long-range shooting, this scope offers an exceptional range of functionality. Whether you're a tactical shooter or a competitor in long-range events, the Stryker HD will exceed your expectations.

Weighing in at just 805 grams and measuring 315 mm in length, the Delta Stryker HD 3.5-21x44 is remarkably lightweight, making it an ideal choice for high-accuracy carbines and designated marksman rifles (DMRs). This compact design allows for easy handling without compromising on performance. You can be confident in your ability to acquire targets at both medium and long ranges with exceptional precision.

One of the standout features of the Delta Stryker HD is its impressive elevation adjustment range of 45 mrad, which is particularly beneficial when dealing with significant bullet drop, such as that experienced when firing from a .22 LR caliber. This feature allows for fine-tuning your aim to suit various distances and shooting conditions. The integrated ZeroStop function ensures that you can lock the elevation knob in place, providing a reliable and repeatable aiming setting, so you can focus on hitting your target accurately every time.

Built with robustness in mind, the 34 mm diameter tube and solid construction of the Delta Stryker HD guarantee durability, even when used with the largest rifle calibers. This scope is engineered to withstand the rigors of difficult terrain and the shocks associated with heavy recoil, ensuring it will perform reliably under any conditions. The DLR-3 reticle, featuring a central illuminated dot with a diameter of 0.07 mrad and thin arms marked at 0.2, 0.5, and 1 mrad intervals, provides shooters with the tools to make precise distance estimations and corrections for projectile drop and wind.

The Stryker HD operates in the first focal plane (FFP), allowing the reticle to maintain consistent dimensions against the target across the entire magnification range, which is particularly advantageous for quick target acquisition and adjustments. The scope features a linear field of view at 100 meters ranging from 11.1 to 1.9 meters, alongside an impressive parallax adjustment from 9 meters to infinity. With a diopter correction range of -3D to +3D, this scope ensures a clear view tailored to your eyesight.

Completing the package, the Delta Stryker HD comes equipped with essential accessories including a battery, objective and eyepiece caps, an Allen key, and a zoom lever. Engineered for extreme performance, the scope is nitrogen-filled to prevent fogging, water-resistant up to 0.3 kg/cm², and shock-resistant up to 6500 J, making it suitable for operation in a wide range of temperatures from -20°C to 71°C. With a generous 120-month warranty, the Delta Stryker HD 3.5-21x44 FFP IR DLR-3 is more than just a scope; it’s a trusted companion for shooters who demand the best in precision, performance, and durability.
SPECS
  • Model Number DO-2525
  • Minimum Magnification 3.5x
  • Maximum Magnification 21x
  • Lens Diameter 44 mm
  • Reticle Name DLR-3
  • Grid Position First focal plane (FFP)
  • Mesh Illumination Focal point
  • Eye Distance 71 – 99 mm
  • Exit Pupil 12.57 - 2.1 mm
  • Linear Field of View at 100 m 11.1 - 1.9 m
  • Angular Field of View 6.33 - 1.06°
  • Turrets Type Opened
  • Vertical Adjustment Range 45 MRAD
  • Horizontal Adjustment Range 21 MRAD
  • Single Click Adjustment 0.1 MRAD
  • One Turret Rotation 10 MRAD
  • Parallax Adjustment 9 m – ∞
  • Diopter Correction -3D/+3D
  • ZeroStop Yes
  • Length 315 mm
  • Tube Diameter 34 mm
  • Outer Diameter of Lens 52 mm
  • Outer Diameter of Eyepiece 44 mm
  • Weight 805 g
  • Sun Visor Thread M49x0.6 mm
  • Water Resistance 0.3 kg/cm²
  • Nitrogen Filling Yes
  • Operating Temperature -20 / 71 °C
  • Shock Resistance 6500 J
  • Battery Type CR2032
  • Warranty Period 120 months
FEATURES
  • Versatile magnification range (3.5x to 21x)
  • Compact and lightweight design for easy handling
  • Large elevation adjustment range for addressing significant bullet drop
  • ZeroStop function for safe and repeatable aiming settings
  • Robust construction to withstand heavy recoil and tough conditions
  • First focal plane (FFP) DLR-3 reticle for consistent target dimensions across magnification levels
  • Illuminated reticle for enhanced visibility in low-light conditions
  • Thin reticle arms with incremental markers for precise distance estimation
  • Nitrogen-filled for fog-proof performance
  • Water-resistant and shock-resistant for durability in various environments
  • Included accessories such as a battery, objective and eyepiece caps, Allen key, and zoom lever
RETICLE
WHAT'S IN THE BOX
  • Delta Optical Stryker HD 3.5-21x44 FFP IR DLR-3 0.1MRAD 34mm Rifle Scope
  • Battery
  • Cap for objective and eyepiece
  • Allen key
  • Zoom lever
FREQUENTLY ASKED QUESTION(S)

Does the reticle remain accurate at all magnifications?

Yes. As an FFP optic, all subtensions in the DLR-3 reticle remain true regardless of magnification, so ranging and holdovers work correctly at any power.

Is the reticle matched to the turret system?

Yes. Both the reticle and turrets use 0.1 mrad (mil) units, so there is no need to convert between systems.

How well do the turrets track?

The Stryker HD is known for very reliable tracking, which is essential for dialing elevation repeatedly in long-range shooting.

Is the zero stop mechanical or shim-based?

It uses a true mechanical zero stop, meaning you physically cannot dial below your zero once set.

How much elevation travel is available for long-range shooting?

The 34mm tube gives a large internal adjustment range, allowing enough elevation to shoot well past 1,000 yards on most centre-fire calibres.

Is the optical system suitable for high-magnification shooting?

Yes. The HD glass and 21× top end are designed to maintain resolution and contrast, avoiding the milky image cheaper scopes produce.

Does the scope suffer from tunnelling at low power?

No. The Stryker HD maintains a proper field of view at 3.5× without noticeable tunnelling.

How good is chromatic aberration control?

Very good for its class — colour fringing around targets and high-contrast edges is minimal.

Is the reticle fine enough for small targets?

Yes. The DLR-3 has a fine central aiming point, making it suitable for small steel, vermin or distant targets.

Does the reticle scale make it good for ranging?

Yes — the reticle has evenly spaced mil graduations which allow accurate target ranging when the target size is known.

Is the illumination daylight bright?

It is not designed for bright sunlight; it’s tuned for low-light and shadowed conditions, which is correct for a precision scope.

How repeatable are elevation adjustments?

Very repeatable — the turrets are designed for dial-up, dial-down shooting, not just set-and-forget zeroing.

Is turret feel tactile enough for gloved use?

Yes. The clicks are distinct and audible, even when wearing gloves or shooting in poor weather.

Does the optic shift zero with temperature changes?

The scope is nitrogen-purged and internally stabilised, reducing thermal shift compared to budget optics.

Is the Stryker HD suitable for PRS-style shooting?

Yes — the combination of FFP reticle, zero stop, tracking reliability and moderate weight makes it ideal for PRS and practical rifle.

How does the 44mm objective compare to 50–56mm scopes?

It gives a more compact, lighter scope with minimal low-light penalty, especially with modern HD glass.

Is this scope well suited to night-time or thermal clip-on use?

Yes. The shorter objective and high optical quality make it suitable for front-mounted NV or thermal devices.

Is the eye box forgiving at high magnification?

For a 21× optic, yes — it remains usable without extreme head positioning, unlike cheaper high-mag scopes.

Does the reticle obscure small targets?

No — the centre dot and thin lines allow precise aiming without covering distant targets.

Is optical distortion noticeable at the edges?

Edge distortion is minimal; most of the field remains flat and sharp, even at higher magnification.

How does this compare to premium tactical scopes?

It offers 90% of the performance of scopes costing much more, particularly in tracking and reticle usability.

Who is this scope really aimed at?

Shooters who want professional-grade performance for long-range, PRS, or tactical shooting — without paying top-tier brand prices.

WARRANTY
  • Delta 2 year warranty
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