I'm only at SR91 right now. It will probably be another month before I get to 130, considering the fact that it has taken me about a week to get through each specialization so far. It might take a little less time than that from this point on, though, because I just unlocked Fast Track last night. It just depends on how much I use it. I really hate the idea of having to give up Firepower and Mobility for it, so I won't be using it all of the time.