The Nightstalker is a unique thermal/night vision-capable scope exclusively used by CSAT forces.
It has the same magnification strength range of regular TWS optics (4x-10x), but is capable of switching between four modes of operation; "normal" day vision, night vision, orange-hot thermal, and red-hot thermal. It also has a built-in rangefinder and has a backup collimator sight for use in close quarters combat. It is only available in a chrome black finish.
Because of its highly diverse capabilities, it is multi-role and is suitable for use on either short range weapons like assault rifles (such as the CAR-95), medium range weapons (designated marksman rifles like the Rahim), or even long range weapons such as the GM6 Lynx sniper rifle.
- Like its night vision-only counterpart the NVS, the Nightstalker is a completely fictional design. Hybrid scopes that are both night vision and thermal-capable do exist but are not as common as dedicated infrared or night vision scopes due to their prohibitively higher cost-per-unit, size, and weight.
- Although indirectly similar, the Nightstalker's closest real-life equivalent would be the optical scopes designed by BAE Systems for the U.S. military's ENVG III/Family of Weapon Sights - Individual program.
- The Nightstalker shares the same model with the NVS. The only difference between the two is the lack of a top mount collimator sight on the NVS and the chrome black finish on the Nightstalker.