250swb
Well-known
The paint on the M9 is very hard wearing, and the only photo I have seen of a brassed one (I think on RFF) that mimmicks general wear (as opposed to accidents) makes me think that sandpaper was used. Mine has had some hard use this winter that would have seriously brassed a black MP, but there isn't a single area that shows brass, not even the sharpest edge.
Steve
Steve