Matt is there an image available of that odd frangible?
Here is the display from Milipol. You can see how the display card for the one on the left is blank, and that is the oddball. Being a frangible is based on information from RUAG’s marketing director, Sabine Brechbuehl, who said the new one is meant to minimize richochet & backsplashes.
The new frangible is designed for short-range training use, like the other SR rounds in RUAG’s collection, so the range safety space required is drastically reduced. The design has not yet been finalised, hence no further info is currently available. It is expected to be launched around the middle of next year.