It is similar in design to the stihl AV mount, but it's smaller and 'tilted' (offset towards one side) while the stihl part is larger and 'square'. I have two torn ones like the mount pictured, and need at least one good one for a S25-CVA that I'm rebuilding. A spare (or three) would be nice to have on hand in case any of my 30+ year old 'good' AV mounts fail. I hope we can figure out what saw that rubber AV buffer with the internal threads and the flange in the middle of it (that Mike pictured as his 'fix') is intended for (and it's still available).:msp_thumbup:
If you're talking about the bracket itself, I suppose you could make a copy from the one pictured but I don't know about the rubber part.