Looks great! Are you going to keep it clean and pristine, or dirty it up?
I'm glad you asked that. I'm going for a more weathered look (similar to Weta replica, not filthy like in the movie), so I spent a few hours yesterday literally stabbing the gun with a screwdriver and thinking "WTF am i doing?". I'm sure it will look good in the end, but now it's really traumatic. I painted damaged areas silver, so it look like metal underneath.
A slight drawback is that they tend to sparkle in direct sunlight.
It only gets more beautiful ... the subtle weathering really makes it look 'real.'
Do you have The Art of District 9? You must, right?