Red Dot Sight

A  is a type of gun sight (a sub type of reflex sight) that specifically uses a red light emitting diode (LED) at the focus of a curved mirror, producing a red spot reticle as a precise aiming point. In gameplay, it is depicted as what is called an "open sight", similar to a miniature Heads Up Display. It appears as an attachment in Call of Duty 4: Modern Warfare, Call of Duty: Modern Warfare 2, Call of Duty: Black Ops, and Call of Duty: Modern Warfare 3.

Call of Duty 4: Modern Warfare
"Replace the iron sights with a precision reflex sight."

- Attachment description



Singleplayer
In singleplayer there are two types of Red Dot. There is the scope type, present only on the G36C and the standard M4A1. There is also the reflex type, present on silenced weapons such as the M4A1 SOPMOD, the P90-SD, and the one used when online.

Multiplayer
In Call of Duty 4: Modern Warfare, the Red Dot Sight is available for all weapons except sniper rifles, pistols, and the MP44 assault rifle. When selected as a weapon attachment, the red dot sight replaces the weapon's iron sights. In multiplayer, the Red Dot Sight is obtained by completing the first marksman challenge (killing 25 enemy players in total with the specified weapon) of any Assault Rifle, Submachine Gun, Light Machine Gun, or Shotgun. The Red Dot Sight is popular because it allows full peripheral vision and is clearer and easier to use than iron sights. However, the Red Dot Sight does not actually increase the weapon's accuracy.

Call of Duty: Modern Warfare 2
In Call of Duty: Modern Warfare 2, the Red Dot Sight has some changes. The new model is square, smaller, less obtrusive, and allows for a better peripheral view. For the most part, it is similar to the Red Dot Sight in Call of Duty 4. Some weapons now have their own unique Red Dot Sights. The TAR-21 uses the MARS Sight and the F2000 also uses its own red dot sight. All Red Dot Sights, except for the F2000's, are disabled when an EMP is deployed. Getting 60 kills while aiming down the red dot sight unlocks the Holographic Sight for primary weapons. For primary weapons, it takes 25 kills to unlock but for secondary weapons, it only takes 10 kills.

TAR-21 Variant
The MARS Sight, also referred to as the "TAR-21 Red Dot Sight", this variant of the RDS is different mainly because of appearance. It looks somewhat similar to a Holographic Sight, but otherwise works the same as a regular RDS. Unlike the F2000 RDS Variant, the TAR-21's RDS can be disabled during an EMP. In the Singleplayer Campaign and in Special Ops, several TAR-21's are fitted with the standard RDS. However, this is not possible in Multiplayer.

F2000 Variant
Also referred to as the "F2000 Scope" or the "F2000 Red Dot Sight", it is the replacement for the standard RDS on the F2000. It is similar in appearance to the Call of Duty 4 campaign's M4A1 (not including the M4A1 SOPMOD) and G36C Red Dot Sight, but is thicker and appears as a long scope. The sight is blurry, and somewhat difficult to use at range because of this. Also, it is not disabled during an EMP. On the Campaign mission Loose Ends you can find an F2000 with a regular Red Dot Sight.

Call of Duty: Black Ops
The Red Dot Sight returns in Black Ops, seen mounted on the Commando in the multiplayer teaser trailer. Unlike the Red Dot seen in previous games, this one has a different design, being rounder and more flush with the weapon. The AK-47 and its derivatives in-game, the AK-74u and RPK, use the Kobra EKP-1S-03M red dot that was designed for the AK frame. The player can customize the color and shape of the reticle along with the lens color. There are 7 reticle colors and 6 lens colors.

Customization

 * For more information, see Reticle and Lens Customization.

Each custom shape costs. Including the default dot shape there are 40 different shapes. The color of the reticule can also be changed for, with the possible lens colors being green, blue, purple, teal, yellow, red and orange. (Except on the Wii)

Call of Duty: Modern Warfare 3
The Red Dot Sight has been seen mounted on a suppressed MP5 in the E3 reveal for Modern Warfare 3. It looks identical to the Modern Warfare 2 variant. It was also seen on an enemy AK-74u during the E3 reveal, and on an AK-47 in the mission Black Tuesday. It was also seen on several weapons in the Special Ops trailer. It appears that there are two types of Red Dot Sights, one similar to the Call of Duty 4: Modern Warfare version and one similar to the Call of Duty: Modern Warfare 2 version. Presumably, the player can choose which one he or she prefers. It has also been seen that the player can choose the shape of the reticule.

Custom Red Dots
 * Target dot
 * Delta
 * U-Dot
 * Mil-Dot
 * Omega
 * Lamda

General

 * In Call of Duty: World at War and Black Ops, there appears to be some sort of advanced version of the Red Dot Sight on the Ray Gun.

Call of Duty 4: Modern Warfare

 * In Call of Duty 4, the red dot sight reduces the AK-47's minimum damage from 40-30 to 40-20.

Call of Duty: Modern Warfare: Mobilized

 * All RDS in Modern Warfare: Mobilized are misaligned, the true hit point being slightly upper than the Red Dot itself.

Call of Duty: Modern Warfare 2

 * In Call of Duty: Modern Warfare 2, there are Akimbo TMP's with Red Dot Sights in the campaign missions No Russian, Loose Ends, The Enemy of My Enemy, and Just Like Old Times; however, the sights serve no purpose.
 * In Call of Duty: Modern Warfare 2, the zoom of the RDS (and other optics) varies by weapon in singleplayer, but is the same for all weapons in multiplayer.
 * In Call of Duty: Modern Warfare 2, if the player turns fast enough while not in ADS, it is possible to see part of the Red Dot on the screen.
 * In Call of Duty: Modern Warfare 2 the red dot sights zoom on the starting weapon has increased zoom than other weapons with RDS.
 * In Call of Duty: Modern Warfare 2 the FAL's red dot sight is slightly off. The shots land below and to the right of the dot.

Call of Duty: Black Ops

 * In Call of Duty: Black Ops, the RPK, AK47, and AK74u use a different, bigger and less rounded Red Dot Sight of Soviet origin.
 * In Call of Duty: Black Ops, the G11 is the only Assault Rifle unable to mount a Red Dot Sight.
 * On the Wii version of Call of Duty: Black Ops, the color or shape of the reticle cannot be changed.
 * In Call of Duty: Black Ops, the Kiparis uses the western Red Dot Sight and the western style ACOG scope, despite it being a Russian made weapon.
 * After Pack-a-Punching the Ray Gun or Teleporting with it, its Red Dot Sight reticle color will change. Also, the reticle may come in any color, unlike in World at War.