The saddles of the bridge that is installed on the BaCHbird are unfiled.
BaCH had them tooled in Korea. The first series the Koreans made were filed/notched. So BaCH disapproved and told them to try again without the notches.
Guess they had no other option than to put that first notched series online for sale as a separate item.
But maybe if you ask BaCH for an unfiled/unnotched bridge (like the ones on the BaCHbird) they can help you out.
They are chromed by the way.