How to set a custom crosshair or change the size of your crosshair.
Guide to Crosshair Modding
Finding the folder
From here you want to browse local files.
Getting to the crosshair folder
You now want to navigate to the “chair” directory.
Replacing the crosshair
From here you can replace these files with whatever crosshairs you want. Keep in mind that the images need to be 64×64 px.