Ghost In The Shell Weapons

Has anyone ripped the weapons from the Ghost In The Shell game? I would love to see some stuff replaced with their versions. I want to see a full replacement of the Car-4, if possible. If not, replace what can be replaced
The M4 in question looks like this

For some reason I can't edit my post, but I do realize that the Para and AMR have different length barrels, so it would require custom models to fit. So if the mod idea happens, maybe make the parts used (for the Car-4) not be default parts? I'm sorry, I need to be quiet on this