The dimensions don't tell the whole story. Size wise, these two guns are worlds apart. Concealed, the 43 disappears. I really wanted the Rami but wound up with the little Glock. It will make you lazy when it comes to concealed carry. Mine eats anything I put in it. I just went through a 2 day combative pistol class and used the 43 for the first day. Not a single hiccup in a full day of shooting drills. I'd planned to take a couple CZ's with me but I carry the 43 more. I don't like glocks at all but the 43 is awesome in its class.