I'm curious what people are using for witness marks/torque stripes on their RDS fasteners?
I recently installed a pair of Holosun 407s, and I used a metallic silver color Sharpie I "borrowed" from my wife's craft supplies.
The sharpie seems like a functional solution, but I was curious if a better option was available. I have no idea exactly how permanent the sharpie will prove to be, so I may need to re-witness at some point.