Portal 2 Inspired Portalgun

All the Portal 2 previews inspired me to make this, a Portal 2 styled Portalgun. It basically grunges up the old portalgun, making it look much older. It's not supposed to be a direct copy, just a derivative. It also inludes both a bumpmap for the basetexture and a bumpmap for the glass tube, giving it a corrugated look. It's not higher-resolution however, as it retains the original textures's dimensions. Suggestions welcome.

EDIT: I toned down the bumpmap a bit, hopefully it looks a little better. Screenshots don't show the change, however. Try it out ingame.