[OR Baller, CST]

So I was lubing my HPR today and I noticed the grease I was wiping off was black in color. I inspected the housing and noticed there was sorta of a wear spot. I assume this isn't normal, but I'm unsure. Does anyone else have any insight to this?

[gixer2000]

Not really sure if it's normal but I have the same thing on my 11

[Eideard]

When I cleaned out my 11 after a good amount of use I found the same thing. I just assumed it was o-ring wear