Sightmark Citadel
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Vortex Viper HD

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Sightmark Citadel
The Sightmark Citadel is built for precision, offering a first focal plane reticle that adjusts with magnification to maintain consistent subtensions for accurate ranging at any level. This feature is ideal for long-range shooting, making range estimation simple and reliable. One of the key advantages of the Citadel is its red illuminated reticle, which enhances target visibility in low light, ensuring you don’t miss your shot in challenging conditions. I found the exposed, low-profile locking turrets to be incredibly user-friendly, providing quick adjustments when needed while the locking mechanism ensures accuracy even under stress. The 30mm single-piece tube, made from aircraft-grade aluminum, gives the scope exceptional durability, withstanding recoil and ensuring precise alignment over time. Finally, the fully multi-coated optics provide superb image quality, maximizing light transmission and delivering bright, accurate visuals.
Vortex Viper HD
For hunters who want a balance of clarity, durability, and performance, the Vortex Viper HD 2-10x42 stands out. With a 2-10x magnification range, it excels in both close-quarter shots and mid-range targeting, making it ideal for a variety of hunting scenarios. The HD optical system provides outstanding color fidelity and sharpness, delivering clear images even in dim lighting—crucial for dawn and dusk hunts. Its precision turrets and side parallax adjustment allow for accurate, on-the-fly adjustments, while the rugged, shockproof construction holds up under tough conditions. Lightweight and built to withstand moisture and debris, the Viper HD is perfect for hunters seeking quality optics without excess weight.
Basic Details
| Brand | Color | Style | Sport | Item Weight | Material | |
|---|---|---|---|---|---|---|
| Sightmark Citadel | Sightmark | Black | 3-18x50 LR2 | Hunting, Paintball, Airsoft | 26.1 Ounces | Aluminum |
| Vortex Viper HD | Vortex | Black | VMR-3 (MOA) | Hunting | 1.4 Pounds | Aluminum |
Magnification & Range
| Magnification | Parallax Setting | |
|---|---|---|
| Sightmark Citadel | 3-18x | 25 yards to infinity |
| Vortex Viper HD | 3-15x | 100 yards |
Performance Insights
| Eye Relief | Zoom Ratio | FOV | Night Vision | |
|---|---|---|---|---|
| Sightmark Citadel | 3 Inches | 6:1 | 6.5° - 1.1° | No |
To Calculate scope clicks: Let’s check out Scope Clicks Calculator
Diameter & Tube Size
| Tube Size | Tube Diameter | Objective Diameter | |
|---|---|---|---|
| Sightmark Citadel | 30mm | 30mm | 50mm |
| Vortex Viper HD | 30mm | 30mm | 42mm |
Compatibility
| Compatible Devices | Mounting Type | |
|---|---|---|
| Sightmark Citadel | Rifle | Picatinny Mount |
| Vortex Viper HD | Firearms | 30mm Picatinny or Weaver rails. |
Additional Features
| Reticle | Max Elevation Adjustment | |
|---|---|---|
| Sightmark Citadel | Mil-Dot | 60 MOA |
| Vortex Viper HD | VMR-3 (MOA & MRAD) | 92 MOA |
Built for Tough Conditions
| Waterproof | Fogproof | Shockproof | |
|---|---|---|---|
| Sightmark Citadel | Yes | Yes | Yes |
Accessories & Warranty
| Includes | Warranty | |
|---|---|---|
| Sightmark Citadel | Sunshade, Throw lever, Lens caps, Battery, Manual | Limited Lifetime Warranty |
| Vortex Viper HD | Scope, Neoprene Cover, Sunshade, Lens Cloth, CR2032 Battery, Custom Turret Tool, RevStop Zero Ring | VIP Warranty, Lifetime |



















