The metal seems to be of good quality, or at least the paint is. If anyone as owned a TM MEU, you'll quickly notice that the finish on the metal parts will wear off in your hands and you'll see that cheap pot metal starting to show. I don't know about anyone else, but I always like to keep an airsoft weapon around me when I'm in the house . That's also how I wore it down so quickly.
The paint on the metal is kind of interesting, it seems as if they were going for a carbon coloring, much like the Western Arms carbon GBB versions. It's black paint but within the paint you'll notice