They may have screwed on to the gun, but you can see in your picture that the cutout for the back side of the mag release is not centered around the back side of the mag release.
But I agree, it is probably certain guns. The Bersa grips above fit fine, he just screwed up in another area.
I'd really like to see my P232 grips on his "test fit" gun. If they fit it fine, then he has a problem because not all frames are the same. But if they don't even fit his gun, then that is simply inexcusable that he didn't test fit the grips and still shipped them.