Where can I find free arms and hands for my game?

Hello, I am creating an FPS game and there is one problem, I cant find one single arm and hand model that’s free so I can hold my weapon. I want the hands to have joints so I can animate them but I cant find that kind of model for free. Maybe you might have a good answer or tell me what I am looking for? Thanks for reading.

I know this is late but since this is the first result in google for “free fps arms model”, I figured I’d share.

There is a set of rigged arms in that pack and they look really nice too.

You can start here: http://www.blendswap.com/search?term=hand

You need Blender to open it. All models in this site are free, some may require you to credit the author in your work.