There should be a skill in any of the trees that allows you to carry 2 primary weapons but no secondary. It should be a reasonable point cost like 5 SP and 20000CR. Like + so devs can see
There should be a cheap price if you just want to buy a gun 1 day with in game creds. And each time you level you should get credits like level 2 you get 2,000 and you just keep adding 1,000 each time you level.