USP .45
This handgun is available from the beginning. This gun also featured in COD 4 and MW2; and is set to make a comeback for MW3. In Call of Duty, this is an all-round good sidearm, as it has great accuracy and a large magazine. Unfortunately, it has mediocre hip fire accuracy.
P99
The P99 is a new addition to Call of Duty. This handgun, which is unlocked at the beginning, is a semi-automatic pistol that was developed in Germany. Also known as the Walther P99, production of this handgun began in 1997.
MP412
The MP412 REX is a Russian .357 magnum revolver that is unlocked from the start of the MW3 multiplayer. This revolver has a break-open frame and an automatic ejector. REX stands for Revolver for EXport. Unfortunately, this pistol never made it onto the market.
.44 Magnum
This revolver first appeared in MW2. In MW3, it can be unlocked at Level 46. It is extremely powerful in-game and it usually only takes 2-3 shots to kill, regardless of Stopping Power. This gun was developed in the United States by Elmer Keith/Smith and Wesson.
Five Seven
The Five Seven is another new addition to the Call of Duty series. Also known as the FN Five-seven, this pistol was developed in Belgium. It is semi-automatic. This weapon is used by many law enforcement agencies in the United States. In-game, it is unlocked at Level 58.
Desert Eagle
The Desert Eagle makes a comeback in MW3. It was previously featured in both Call of Duty 4 and Modern Warfare 2. Unlocked at Level 76, this pistol is described as a large-framed gas-operated semi-automatic pistol that was designed by Magnum Research in the United States.
FMG-9
The Magpul FMG-9 is a folding submachine gun that will act as a machine pistol in MW3. It will be unlocked from the beginning of the multiplayer. The FMG9 was developed in the United States and it is designed for concealed carry.
MP9
The MP9 is a blowback-operated automatic 9mm machine gun that is unlocked from the start of the game. The original design came from Sweden. In Modern Warfare 3, it will act a machine pistol.
Skorpion
In previous Call of Duty games, the Skorpian has acted as a SMG. However, in MW3, it will be a machine pistol. This weapon was developed in Czechoslovakia in 1959 by Miroslav Rybář. The Skorpian is unlocked at Level 36.
G18
The G18 first appeared in Modern Warfare 2 as a machine pistol. In MW3, it will be unlocked at Level 70. This weapon has an extremely high rate of fire, although it isn't as powerful as some of the other machine pistols. In MW2, it had a large amount of recoil.