So I just finished resurrecting my first GBB KWA M9 and I have to say that it looks really good.

When I got it, it was VERY dirty and you could hear the grinding of dirt in the internals. I slowly disassembled the gun getting it down to the bare bones. After some work with Fantastic and toothbrush, I was able to at least get all the gunk and grime out of the tinny places. It still looked really rough but at least it was somewhat clean. Next was to use silicon spray to lube and wash...