There is little point in automatic ejectors if they are not selective. And these are posed in the photo as selective.
And there are a number of English ejector patents that were applied to hammer guns. The issue then becomes which one did AyA employ, or modify for their use. Perhaps they created their own. The website does not specify.
They use a basic H&H sidelock design, so which side of the plate the "hammer" is on makes little difference to the ejector:
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