SMAWSMAW is short for Shoulder-Launched Multipurpose Assault Weapon. This launcher was developed in the United States. It is based off the Israeli B-300. In real life, this launcher is used to destroy bunkers and other fortifications. In MW3, it will be unlocked from the beginning of the multiplayer.
JavelinFirst introduced in MW2, this launcher is unlocked from the start of MW3. To use this launcher, you must lock onto a vehicle or lock onto a specific part of the map. In real life, it is an anti-tank missile that was developed in the United States.
StingerThe Stinger is also making a comeback in MW3. It can be unlocked at Level 40. In MW2, it was easily the best anti-air launcher in the game, as it gave you two stinger missiles. In real life, the Stinger is a personal portable infrared homing surface-to-air missile that was developed and designed in the United States. It first began service in 1981.
XM25The XM25 is an air burst grenade launcher that originated in Germany and the United States. In MW3, it can be unlocked at Level 52. The XM25 fires 25mm grenades that explode in mid-air at or near the target. It was one of the weapons shown in the MW3 multiplayer trailer.
M320 GLMThe M320 GLM is unlocked at Level 64 in MW3. It is a grenade launcher that developed in Germany. It is a single-shot 40 mm grenade launcher system. A model build of this grenade launcher was shown in the MW3 Kotaku leak.
RPGThe trusted RPG makes a comeback in MW3. It was featured as a launcher in COD 4, MW2 and Black Ops. In MW3, it can be unlocked at Level 80, which is the final level before you prestige. The RPG was developed by the Soviet Union. It is by far the most powerful launcher in the game, as it comes with two rockets and no lock-on is required.
Black Ops 2 Launchers