In this guide, you will find out how to Change Aiming Input Device in Call of Duty Modern Warfare 2.
You have to boot up your game and then click on the settings button in the top right corner of your screen. After that, select the controller from the drop-down menu.
Under the input device, you need to click on Aiming input devices and select mouse or controller from the options. For this, you have to be on the home screen, it will not work if you are in the game or searching for the game.
