welcome,
not sure where you live.
but if you have any gun shops/shows in your area, you may want to take your unloaded pistol down there and see what will fit.
what i noticed on my older CZs is that the newer high cap mags will fit. But since i have a boat load of them i just do the try and then make note of it and will bring those to use in my czs if im going to shoot 1 or many.