Each weapon is upgraded with different improvements, and you can get these upgrades by using the weapon in a way that makes it stand out. For example, you can score three or even five consecutive kills using a particular weapon and your knowledge of the weapon will increase. When you reach the top of the experience meter for a weapon and you can gain an upgrade to the weapon. This could include an satchel bag for carrying additional weapons (the next upgrade will be a bandolier with grenades) as well as hair triggers that is used with the pistol's automatic permitting you to fire more quickly and a pistol grip for your Thompson submachine gun, which improves the accuracy of your gun; and many other.

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