The following is a list of all available weapon attachments in Modern Warfare 3. Most commonly used ones are scopes and sights, but there are also different ones, such as a grenade launcher or ammo capacity increase.
All weapon mods have some sort of a benefit, but some also have drawbacks (for example, limiting vision or increasing recoil). Be sure to familiarize yourself with all pros and cons before you attach something to your weapon.
- ACOG Sight
- Extended Mags
- Grenade Launcher
- HAMR Scope
- Heartbeat Sensor
- Holographic Sight
- Hybrid Sight
- Rapid Fire
- Red Dot Sight
- Thermal Sight
The Modern Warfare 3 ACOG Sight Attachment adds a 2.5x magnifier to your weapon which is more than double the zoom in of the iron sights or any of the dot sights. It is very useful for extending the long range capabilities of any MW3 weapon, but on many of them it increases aim down sight time, idle sway, and recoil.
The Modern Warfare 3 Extended Mags Attachment increases the size of the magazine used with a weapon resulting in more bullets fired before reloading is necessary. The amount varies by gun but generally there is about a 50% increase in size. It is best used on weapons that have long reload times but not on guns that you’d frequently reload anyway.
The Modern Warfare 3 Grenade Launcher Attachment is an add on available for assault rifles that adds an under-barrel grenade launcher to the weapon. Grenades have an arming distance of 5-6 meters and will not detonate unless they have traveled this distance. Shooting at obstacles too close to the player will result in the grenade just bouncing off the surface. However nearby enemy players can be killed if the grenade directly impacts them without exploding.
The Modern Warfare 3 HAMR Scope Attachment is a dual purpose hybrid sight. One scope is similar to the red dot sight or the holographic sight in that it uses an LED to create a red dot within the reticle for precision aiming while looking down the sight of a gun. The other sight is similar to an ACOG with a 3x magnifier. Players can toggle between the two when this attachment is mounted to a weapon.
The Modern Warfare 3 Heartbeat Sensor Attachment uses an electromagnetic field to discern enemy locations and displays them on a screen that is side mounted on a weapon. It acts much like a UAV but only displays enemies that are in close proximity to the player.
The Modern Warfare 3 Holographic Sight Attachment uses an LED to create a dot within the reticle for precision aiming while looking down the sight of a gun. It is in many respects just like the Red Dot Sight but it is mounted slightly higher on a weapon and therefore reduces the amount of muzzle flash visible during firing. However, it also slightly limits peripheral vision due to the way the scope blocks out portions of the screen while aiming down the sight.
he Modern Warfare 3 Hybrid Sight Attachment allows a player to have two sights or scopes mounted to the same weapon at the same time. One is a holographic sight and the other a magnified sight which can be used in conjunction by pressing the left arrow on the D pad.
The Modern Warfare 3 Rapid Fire Attachment increases the speed at which a weapon fires by one third. It therefore raises a weapon’s damage per second capacity but consumes ammunition much more quickly and also makes the recoil more difficult to control.
The Modern Warfare 3 Red Dot Sight Attachment uses an LED to create a red dot within the reticle for precision aiming while looking down the sight of a gun. It is in many respects just like the Holographic Sight but it is mounted slightly lower on a weapon and therefore increases the amount of muzzle flash visible during firing. However, it also slightly improves peripheral vision due to the way the scope does not block out portions of the screen while aiming down the sight like it’s holographic counterpart.
The Modern Warfare 3 Shotgun Attachment is an add on available for assault rifles that adds an under-barrel shotgun to the weapon. It is useful as an addition to guns that do not have good short range capabilities and has a faster switch-up time than going to a secondary weapon or reloading.
The Modern Warfare 3 Silencer Attachment makes it much more difficult to hear shots fired and it also prevents your gunfire from showing up on the enemy’s mini-map. It also has the benefit of reducing muzzle flare when firing a gun. However, it often has a down side that affects a weapon’s range or accuracy making this attachment more appropriate for mid and short range use.
The Modern Warfare 3 Thermal Sight Attachment allows a player to see enemies based on body heat signature. When looking through the scope you will see other players as sold white against a gray background. In this manner the sight can be used to see through smoke. It is more difficult to use on snowy maps and bright muzzle flare is also a consideration with this scope.