UMP-45 is a pistol that was introduced in the Counter-Strike: Source update. It is a classic weapon with a high rate of fire and good accuracy at medium distances. It has a bullpup configuration, which means that the magazine is behind the trigger. This pistol has been designed for players who like to move around and quickly take out opponents. Exchange your Soul Gems for this CS:GO weapon! The UMP-45 is a submachine gun in the game Counter-Strike: Global Offensive. Thanks to the design of the pistol, it can be used by left and right hands. It is a cheap and efficient weapon with many modifications available for it.