Looks like image. Custom wallpaper. Replaces default menu backround with a question mark. This is just for fun; no realism. Download at your own risk...
I made mod that makes game and mainly guns more realistic. I've also added new skins and grenades from Back2Fronts mod (many thanks for this), new weapons and maps. I also have to thank Def and xMartineSx for support, help with tests and so on. Works only in Multiplayer. MCh2207Cz allowed me to use his skins. I hope you'll like it!
I think there will be quite a lot changes. I won't write all of them now but it general -
-New improved smoke effects and muzzleflash-New gameplay type-New scopes
-New guns (G41, DP-28)
-Remade machine-guns (again :D)
-Stats of guns changed again. This time even more realistic I hope.-Sprint mod
-New skins-New sounds
I can't remember right now how pre-release version looked like, so I can't name all the changes. These are those I am sure they're new.