If you’re playing Call of Duty: Black Ops 4, you’ll know all about the 9-Bang.
9-Bangs blind your enemies, making them sitting ducks for a kill. If you hit them with a fully-charged 9-Bang, then they’re sitting ducks for ages. They’re a hugely popular tactic in the multiplayer portion of the game, whether it’s traditional multiplayer or Blackout, the battle royale. When you’re 9-Banged, it looks like this:
Treyarch has already nerfed the 9-Bang once, making it significantly more cumbersome. But it is still for many players the scourge of the game, and has become something of a running joke in the community.
Source: Eurogamer The Call of Duty: Black Ops 4 9-Bang is so powerful, it's sending players straight into the apocalypse