TC has a new weapon system which work in that way, that you collect weapon experience points. So you need to decide and if you play to have the best gun you should start with "Machine Gun". It will starting rising your weapon power with every hit/rob you do. You can also buy some other weapons, but there are a cupple of weapons in one group, which only raises weapon points from choosen weapon, so if you buy weapon which isn't in that list and if you would buy in the end of the round Mean Maschine you will need to make points of weapon again.
So I sugest you to use "Machine Gun" in the beginning.
Have a nice day,
Dahakka
We are notthing, if we are only that, what we are for others!