The 45C is the same length as the 45 Mid Size if your LGS has that model. Otherwise, the 45C is about 1/2 in longer and about 1/4 taller. The width difference is only about 0.10 in. I hope that helps you visualize it better. I have both and like them but consider them as different roles of CC gun. The 9/357/40 Compacts are more concealable that the 45 Compact, but it has a bigger grip, longer sight radius and 9 rounds of .45 while still being carry sized.