Mafia II is an open-world action-adventure video game, the sequel of Mafia: The City of Lost Heaven. It was developed by 2K Czech and published by 2K Games in 2010 for the PC, Xbox 360 and PlayStation 3.
The following firearms make an appearance in the video game Mafia II:
The Colt M1911A1 is the standard pistol throughout the game. This weapon is seen being used by Vito, Joe and Henry in the game. The M1911A1 is Vito's favorite gun.
In Chapter 10 Joe and Vito use a special custom version with a 23 round magazine. Joe tells Vito not to lose it because there are only two in the world, yet it can be bought at Giuseppe's. This version also appears to be nickel-plated.
The Mauser C96 can be seen being used by an Italian soldier in the training mission. Can be bought at Harry's gun shop. There weapon is show to be incorrectly reloaded by inserting a vertical box magazine into the weapons magazine from the underside of the magazine housing.
The Thompson M1928 is the main submachine gun of the gangsters. The Thompson M1928 is usually seen with a 50-round drum magazine. The gameplay video shows it being almost uncontrollable, this is probably because the game has no lock-on system. When Henry is shot in the leg, Joe uses a Thompson M1928 to kill the man with Vito.
The Beretta Model 38A is used by Italian soldiers in the training mission, and can be later bought at Harry's gun shop later in the game. Called ".38 SMG" in the game.
The MP40 is often used by enemy gangsters, and is more common than the Grease Gun. It has a surprisingly slow rate of fire and can be bought at Harry's.
An MG42 machine gun is used by Vito in Mission 4 "The Buzzsaw", where he uses it to ambush a convoy of gangsters. Can also be used in the training mission.
A Remington 870 Field Gun is seen on the table in the gun shop screen. Used by Vito, gangsters, cops, and random shop owners. An anachronism, the 870 wasn't produced until 1950 which makes it incorrect to have for the first five missions. The raised rib was also a feature that wouldn't be added until later. Also, the shotgun in-game carries 8 rounds whereas it is modeled to look like it holds 4.