to address your question. where to get your band mask rebuilt... first what part... second keep in mind its just a scuba regulator. . the side block should never break if by chance it is missing just go buy one an make it fit, or have a machinist build you a better one. I own a machine shop and welding shop. So, I pretty much build everything, broke or not.
Hello Cody, did you get your answers about the KMB MASKS? LISTEN I have an use a KMB all the time. Partly because of my years at this no one says s*** but on occassion I have to tell someone to F*** off. I use what is best for me on the job. IF you do the same you'll be fine. Some jobs are meant for hard hats and some are better to use a band mask or even a snorkle.