Sightmark Citadel
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Sig Sauer TANGO6T

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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.
Sig Sauer TANGO6T
For those looking to upgrade to a first focal plane Low-Power Variable Optic (LPVO), the SIG SAUER TANGO6T FFP is a scope that delivers in both clarity and ruggedness. Originally developed with tactical engagements in mind, this scope has proven its versatility across a range of platforms, from ARs to bolt actions. I’ve had the chance to experience its 6x Super-Zoom Advanced Optical System and appreciate the glass-etched illuminated reticle, which adapts beautifully to any light, day or night. The TANGO6T’s construction combines durability with clarity, featuring HDX optics and SpectraCoat for impressive low-light performance. With its extreme waterproofing and abrasion-resistant lenses, it’s built to excel in the field.
Basic Details
| Brand | Color | Style | Sport | Item Weight | Material | |
|---|---|---|---|---|---|---|
| Sightmark Citadel | Sightmark | Black | 3-18x50 LR2 | Hunting, Paintball, Airsoft | 26.1 Ounces | Aluminum |
| Sig Sauer TANGO6T | Sig Sauer | Flat Dark Earth | DWLR6 Reticle | Hunting | 2 Pounds | Glass |
Magnification & Range
| Magnification | Parallax Setting | |
|---|---|---|
| Sightmark Citadel | 3-18x | 25 yards to infinity |
| Sig Sauer TANGO6T | 1-6x | Fixed at 150 yards |
Performance Insights
| Eye Relief | Zoom Ratio | FOV | Night Vision | |
|---|---|---|---|---|
| Sightmark Citadel | 3 Inches | 6:1 | 6.5° - 1.1° | No |
| Sig Sauer TANGO6T | 3.8 - 4.0 inches | 6:1 | 1.1° - 3.4° | 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 |
| Sig Sauer TANGO6T | 30mm | 30mm | 24mm |
Compatibility
| Compatible Devices | Mounting Type | |
|---|---|---|
| Sightmark Citadel | Rifle | Picatinny Mount |
| Sig Sauer TANGO6T | Rifle | Integral Mount |
Additional Features
| Reticle | Max Elevation Adjustment | |
|---|---|---|
| Sightmark Citadel | Mil-Dot | 60 MOA |
| Sig Sauer TANGO6T | Illuminated | 120 MOA |
Built for Tough Conditions
| Waterproof | Fogproof | Shockproof | |
|---|---|---|---|
| Sightmark Citadel | Yes | Yes | Yes |
| Sig Sauer TANGO6T | Yes | Yes | Yes |
Accessories & Warranty
| Includes | Warranty | |
|---|---|---|
| Sightmark Citadel | Sunshade, Throw lever, Lens caps, Battery, Manual | Limited Lifetime Warranty |
| Sig Sauer TANGO6T | Lens covers, user manual | Sig Sauer Electro-Optics Infinite Guarantee |



















