Nathan m series help

So I have a Nathan airchime m3 and need a couple parts for it. the end cap and power chamber are broke on one of the horns, I found a power chamber but cannot for the life of me find an end cap for the 1 horn. any help is greatly appreciated.

Call Hornblasters and see if they have one. I was looking for one and could not find anything or check horn and whistle board.

http://www.ebay.com/itm/Nathan-Airchime-M-Series-Power-Chamber-Locomotive-Horn-/112194452391?hash=item1a1f4f7ba7:g:TfYAAOSw4GVYHU~6

This is only the chamber. If I were you though, I’d contact Mike Muha at South Bay Horn Works and I bet you he’d be able to fix the back cap and chamber. Especially with a horn as a rare as an M3, you probably don’t want to turn it into a Mutt, a horn made up of parts from different horns.

^ Good suggestion. If you need further info on how to track down Mike, here’s his website
https://sites.google.com/site/southbayhornworks/