I have N frame round butt Ahrends and Culina grips on my Jovinos.
I've had other makes on them too, some require a small amount of wood removal others don't.
Culina sent me the grips before final shaping and finishing so I could put them on the gun and trace around the grip frame. I then sent them back to him to finish for a custom fit.





N Frame Round Butt grips will be what you want.

KO