Talk:FAQ/@comment-118.136.92.230-20141021140217/@comment-26355183-20150511141301

As it stands, there is no way to increase your inventory without using Platnium.

It should be known, though, that if you buy a weapon in the market using Platnium, it comes with an Orokin Reactor installed as well as its own inventory slot.

Although, do realize that inventory slots for weapons are cheap, cheap, cheap! 12 Platnium buys you TWO inventory slots. If you can be bothered to buy Platnium with real money, the $5.00 USD package of 75 Platnium will get you 12 weapon slots, more than enough if you get weapons to rank up, max them at Rank 30, and sell the ones you didn't like.

If you don't want to spend real money, find Void Keys from things like Survival, Spy, Excavation, and Defence missions. Once you find yourself in the Void, you can find Prime weapon pieces, which you can sell to other players for Platnium, at no real world cost (to you)!