So, Germans can't match Italian shotguns? Wrong. HK CAWS was the
world's most advanced back in its day:

http://www.gurpsmaster.de/caws.jpg

But don't get me wrong, I'm not arguing with you about the excellent
arms of Beretta, Franchi, or Benelli. I just wanted to show you that
HK DID try the autoshotgun project for the US and it didn't proceed.

Rob