Hopefully you don't mean that it's silver. It's like all guns, it'll be painted after it's out of the prototype stage.
It looks good to me in the pics.
Parkerization, bluing, and anodization doesn't last long.
Hopefully, they won't just paint it. My CA 249 is that way, and I'm not happy with the finish at all. It's better since I roughed it up a bit, but still nowhere near realistic.
I can't stand the finish on most airsoft parts. TM Mags, Metal recievers for M4s (with the exception of the new Guarder sets), and lots of mounts and other accessories are just painted black. When the finish flakes off, it looks terrible.
I have NEVER fired a firearm in the military that had a black PAINTED-ON finish.