What is a Matt blue finish on a gun barrel?

Answer:
A Matt or Matte finish is polished, but not to a mirror like degree. Somewhat like a satin finish on wood, it tends to be non-shiny. Of course, blued means the standard black finish used to help protect the metal from rust (it is a form of controlled rusting that produces black iron oxide)
First answer by C3shooter. Last edit by C3shooter. Contributor trust: 352 [recommend contributor recommended]. Question popularity: 1 [recommend question].