Guys today I was searching for .obj files and I can tell you that everything IS or WAS in the internet. Do not look at banana ONLY...I've found all models of Metal Gear Solid in .obj
but the website wasn;t able to send files into my anymore PC. So go to the google and type:
"game title .obj"
"3d model weapon .obj"
If you look deep you wil find everything - It can be too late but still...there is/was everything in the INTERNET! Trust my words