Ok. I have looked into the request of adding the weapon. Theres some things Im not sure about that maybe other forum members can. I know to get that gun to work. You need a model of it sitting in a position before you pick it up. Which would be a .x file. Also you need a .x file for when you have it picked up, and a .x model for the weapon being reloaded. I looked in the gun models already there, and theres much info and models that go into using your own weapons. When V1 comes out I will however go from intermediate modeler, to expert. V1 makes me wanna hibernate until its release, I cannot wait. Sorry I couldnt answer your question. I tried many things, and couldnt get it to work.
Semper Fidelis.
God Bless.