As Taylor noted, shiny is needed more times than not, when shooting on bush trail walks.
If you click a couple times on the last picture of Taylor shooting, you can make out 3 points of light.
One from each side of the front sight base, with one in the middle off his front sight blade. All of our
front sights have a short 45 degree angle on the rear surface. It it this 45 degree angle that gives a
nice shiny sight, but it easily touched with dry-erase marker to become instantly dull black. Wiping it
with your thumb removes it instantly. Any time the rear sight becomes dull and you want it shiny, rub
it with your thumb, wet like "York" or dry, or with a piece of patch material to polish it up a bit.