FPS Game Setup needed in UE4

Hi. I’m looking to create next alternative of COD, but I need UE4 game already setup. So I can just create models and animations, and make my own game ready to go. Can anyone give me some insights? Thank you.

That’s what people usually call a mod.
So, basically, you are searching for an already completed fps UE4 game, ready to be packaged, where you just need to change a few things. Right?