Mars Sight

The ITL MARS Optic Sight (International Technologies Lasers Multi-purpose Aiming Reflex Sight) is a reflex sight and laser. The laser can be visible or infrared. It has been purchased by a number of forces, including the U.S. military for its M16 series weapons, and Israel for its IMI Tavor TAR-21 rifle, as well as other commercial customers.

Call Of Duty: Modern Warfare 2
In Call of Duty: Modern Warfare 2 multiplayer, the MARS Sight replaces the Red Dot Sight on the TAR-21. In single-player, the TAR can be found with both the MARS sight and the Red Dot. The Sight has the same ADS (Aim Down the Sights) time, turning speed, and accuracy as the standard Red Dot Sight. The use of the MARS is completely up to the users decision. 60 kills with this attachment on the TAR-21 will unlock the Holographic Sight. Strangely, on the Create-a-Class menu, it names the MARS sight as the Red Dot Sight, possibly because it is essentially the Red Dot with a different skin. The sight is also known to be compatible with the M16 Series rifles. However, the M16A4 is never configured with the sight. A common mis-conception is that the F2000 uses the MARS sight. This, however, is incorrect as the F2000 uses its own telescopic sight. Oddly, the multiplayer EMP does not disable the MARS sight, despite it being an electronic attachment. The MARS gives less zoom than red dot sights.

Trivia

 * The actual MARS sight in game is slightly longer than the real one. This limits the view through the scope and decreases peripheral vision due to the thickness of the scope and perspective.


 * The MARS sight, despite being the standard, built in scope on the TAR, isn't the most common. Many Israeli troops with the TAR have a red dot sight that is mounted like the RDS on all other guns in MW2, with the panel at the front. This is also built into the gun.
 * In singleplayer, it is called the MARS sight while in multiplayer, it is simply a red dot sight.
 * You can only find a gun with MARS sight in the Infinity Ward Museum or in single player. This option is an exception for the TAR-21 and F2000 in Multiplayer, since the Red Dot Sight is replaced with the MARS sight.