Originally posted by kinglawlor4
It could just be the lighting :S
Thats what i suggested because clearly when the guy is running, the gun is certainly not golden, more of a silver/grey type camo....i think it is light reflecting off the metal in a particular way, because when they reach the end of the tunnel, it gets blocked up, so light rays can only enter in certain gaps, reflecting off the gun to make appear shinier... as som1 said before, the possibility of them putting that scene of the guy with a golden gun is very low because it would be pointless showing it during the campaign storyline...maybe they will show it in the actual MP gameplay footages