I have a handful of them. I do not use them as much as I used to due to the fact that at times I believe that the old Minuteman II D104-M6 is a far superior microphone as far as being much easier to work on and get switches for, though I have yet to ever need to replace one. Also, the PTT bar is much longer and easier to push. Only issue is the cases becoming brittle and the screws break the posts that hold it all together. I also have the old better mini switches new old stock. If you get ahold of a newer mic cheap or free, you may be able to find a switch, or if need be I could get one your way so you can replace it. Only remaining issue I have found is that the PTT buttons make noises when pushed, as the dimensions do not seem to be consistent. If you are insistent on buying a complete older mic, PM me.