@Nitedoc Well, I had a Beretta, but my supervisor forced me to trade it for a 7.65 mm chambered Walther PPK...making it just slightly over 0.30 inches. The Beretta was not considered to be a proper gun for my line of work; the Walther was said to have "a delivery like a brick through a plate-glass window"...and I used it effectively for years.
You seem to know a lot about the world of international trade.