These are the correct m-18 air cleaners. I am having a hard time finding a replacement m-18 and am considering using a Sherman filter to at least keep it era correct till I come across the correct filter. The brackets would be easy to make a Sherman filter fit up. The filter was damaged from an over pressured breech. Radios look about the same.
I am looking for 20-30 track connectors and wedges for our rubber chaffee tracks to install on our m-18. Not having much luck in the US, hoping that one of you fine gentlemen could lend a hand. Thanks!!