This modpack has guns, armor, vehicles, and props from Cod MW. It makes the game a lot harder in survival- Or at least it makes you insane while playing survival mode. Because you'll always be thinking about how you want to get a gun, so I recommend either using commands to get yourself a starter pistol in survival or go into creative get a pistol and then go into survival. It affects the game by adding modern technology and all military essentials.
PS: The modpack was only made for a minecraft series I'm going to make with my friends. I don't expect many downloads.