The newly introduced Quartermaster Suppressor in Call of Duty: Warzone and Modern Warfare 3's Season 5 update has turned out to be extremely overpowered, as it significantly improves both horizontal and vertical recoil control at a minor cost of ADS speed. What's strange is the fact that this powerful muzzle attachment was secretly added as part of the update, not being mentioned in the Call of Duty: Warzone patch notes.