Let's being honest, a lot of people have an ingame crosshair, it's even available in some screens... So ! to make it fairplay to everyone i made a very simple script to edit and use a built-in crosshair into FiveM. It's not perfect, but it should do the job.

• FiveM Forums
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• Download cookcrosshair from GitHub
• Edit your server.cfg and add ensure cookcrosshair
• People will already be able to edit and use the crosshair using the commands using the console :
• • cross : To display the crosshair
• • crosse : To edit the crosshair
• • crossr : To reset the crosshair
• To add the options in your menus, You might want to trigger the events from your own scripts :
• • TriggerEvent("cookcrosshair:active")
• • TriggerEvent("cookcrosshair:reset")
• • TriggerEvent("cookcrosshair:edit")
• Add, remove anything you want, from now on that is your script !