This kit comes with serval metal parts inculding some pistons for the neck.
Straight out of the box the parts aren't very shiny (B) as the should be (A).
But i learned a way to "polish" steal parts (A) (check the YT channel of sleepylafiel )
Just take some really fine sandpaper and a eletric drill
Also did the other part
Some clean up and it looks much better!