Okay, so I watched PW Productions' rigging tutorial for fragmotion, and everything went totally smooth. Until I got into FPSC, that is. In fragmotion the model looks totally normal, anims play fine and it looks like it should work. In FPSC, the hands are fine, but the gun model is TOTALLY FLAT. I have no idea what happened, nor how to fix it. I thought it might be a texture problem or something to do with the effects, so I fiddled with those in the gunspec, but it didn't do anything. I'm certain something got lost in translation between fragmotion and FPSC, just not sure what. I'm sure this has happened to someone before, but I couldn't find anything on it...
THIS IS A SIGNATURE. I swear.