That's a Laser engraved pattern. The pins within the engraving pattern meant to be flat. They are engraved with the Laser as part of the pattern all at the same time. Innother words the pins are assembled into the frame at the time of Laser engraving.
Then assembly must be done carefully to line them up so the pattern matches.
If the pin is not flush with the surface it can also detract from the looks.
I have no idea what an opposing double secret bridge action is.
i suspect it is a marketing technique - sometimes referred to as...if you can't dazzle em with brilliance, baffle em with bullshit....
best regards,
tom
