The ISO 45 is set to become one of the strongest SMGs in season four of Warzone 2 and Modern Warfare 2. If you're looking for a strong alternative to your Vaznev-9k, Lachmann Sub, or Fennec, this fast-firing SMG hits hard with its .45 rounds—and the good news is that it's free to everyone.
Season three may have gone out with a bang, but there's plenty of stuff in season four as well, including the new Vondel map, and a whole heap of changes to DMZ such as the wallet where you can squirrel away cash you extract with. With all that in mind, here's how to unlock the new ISO 45 submachine gun in Warzone 2 season four.
