Asking for a friend...

Do you know which cut you have? There have been several. C&H makes a plate for the newest R1PRO cut, which has holes for the R1PRO/DPP and RMR/507C. Prior to that, there was a cut for the Romeo 1 Pro and Deltapoint Pro that would likely use the same plate with a Romeo Zero/407K/507K/RMSc as the newer cut. Before that, there was a slide cut for the legacy Romeo 1.

The Romeo 1 Pro and Deltapoint Pro use the same screw pattern as the Romeo Zero, 407K/507K, Shield RMS, and RMSc, but the footprint is larger.

CHPWS makes ad adapter plate to fill the gaps when putting a Holosun 407K/507K on a DPP/R1P cut. For an X-Compact this is probably a better solution than a full size red dot.

Edited to add: The plate is for an RXP slide, not a slide with the M17/M18 style sight plate.

Not sure which cut I have. Is there an easy way to figure out? - Say, like the manufacturing date?

Looked at CHPWS, they do not have an adapter.

They are pricey too...

Thinking just need a plastic adapter plate, like Canik provides to mount their optics.

Four nubs sticking up, to assist with holding the optic/taking stress off the screws. Maybe some extra plastic, as bumpers in the front and rear, to take up any extra space. And the screws to mount in the rail...Then, "Bob's your uncle!"

Need to find out who makes the adapters for Canik, I guess?...Costs a quarter to make, sell them for $25, all day...

Do appreciate the suggestions gentleman!