I've done it to my Glock 18c and it turned out great.
http://www.airsoftcanada.com/showthr...806#post307806
I still have to put a coat of clear on it for protection. I aslo just finished giving it a polish with #0000 steel wool. It came out like a mirror. Very nice. It's dead easy and looks great.
Edit: The photos are before the steel wool polish. It looks much better now.