I am looking at the CZ line, specifically the P-01, the compact 40, and the 97B. I like the look of the dust covers. Anyway, do they manufacture different frames for each one? I want to know if the 9mm will have a smaller diameter grip, the 40 a larger one, and the 97 the largest. Or did they just make a .45 frame and put in smaller caliber barrels for the 9mm?