Call of Duty: Modern Warfare and Warzone have a wealth of customisation and cosmetics options. One of which is the ability to assign hand gestures to your character. These can be used as a means of giving instructions when playing in a squad but more often they’re just used for fun or humorously. Players will use them after a kill or sometimes make them part of a trick shot, such as making a gesture with the left hand while firing from the hip with the right. I’ve not noticed a lot of use of gestures while playing nor do I use them myself. It takes all my concentration to stay alive. However, they do seem to feature in the various CoD clip shows I watch on YouTube, so they’re more of an affectation used by “top tier” players. Recently, developers’ Infinity Ward removed the OK gesture from the game. This minor change was not mentioned in the patch notes and the gesture was replaced with a new one called "crush".