The pictures of the (vy nice!) 1925 Holland DR show disk set strikers very well in the sixth photo from the top. Having this set up makes it much simpler to replace a damaged/broken firing pin.

I find it interesting on the southpaw 1925 rifle that, while it has the reversed triggers and left rolled guard, the only clue to its original orientation in the Holland spec sheet is the cast measurements - all cast-on. I would have thought they'd have noted "left hand" specifically. And the cheek piece has disappeared...