Beretta

Fabbrica d'Armi Pietro Beretta (aka: Beretta Euroarms or Beretta) is an Italian firearms manufacturer. It is one of a few real world companies in the Cyberpunk universe.

Overview
Apparently Beretta is also part of a larger un-named weapons manufacturing megacorporation with the weapon companies, Royal Enfield Ordnance, Heckler & Koch and Rhinemetall.