As with all Grand Theft Auto games, GTA 4 promises a variety of weapons. The list below is based solely on screen shots and videos of the game thus far and will be updated with the full list, once the game is released.
The MP10 fires from a closed and locked bolt in semi-automatic and full automatic mode. This gun has a unique roller delayed blowback - locked-bolt system, full-stock that folds to the side for transport for shooting, and can be fitted with an illuminating flashlight integral to the forward end of the receiver. This is a improved version of the Hk MP5 for the next century. Source
