Suppressors Do Surefire Socom cans show up dirty?

Mclovinguns

Sergeant
Minuteman
Oct 16, 2008
527
50
44
Dickinson ND
I just got my new Surefire Socom can I bought from a vendor on here and it showed up lightly carbonned up with some light marks from being previously mounted. Is this standard from being tested at Surefire?
 
Some burn marks, but not with a layer of soot or anything like that.

The stainless steel inside's still shiny when new.