From my understanding, you can order a Kip tube and have one within a month. It's a bit of a wait but not that bad, so I don't see how they're considered "hard to get". I could be wrong and I hope I'm not since I just ordered one less than a week ago and I was hoping to have it within a few weeks from now. On the carriercomp website it says there's a 2 to 3 week delay on the tubes.