Importing 3rd person weapon models from CS:S

[Yakuza]

Hey guys I am new to the mod scene and I am having trouble discovering were or what files I need to import some CS:S models. I am working on a 3rd person mod project and I want to include some of the CS:S weapon models. However from my own trials all I can do is import models that appear seem kind of like "half done". I am working within 3d max7 and when I import the "world" model I can only veiw a portion of it as the when I rotate the model it becomes invisable like its not a solid object.

My goal is to use the models in CS:S, the ones that you see in third person or laying around on the ground. I want to use these as place holders while I attempt to create fictional weapons that have some of the porportions like the Ak-47.