Different Sizes of MRDS Windows

[Sensei]

I also have a preference for a circular display window like the SRO or Romeo three max. While it isn't appropriate for EDC use, the Sig Romeo 3 Max is my absolute favorite competition optic.

I plan to put a R3 Max on my P226 X-Five STAS. I’m a little bummed that the X-five uses the Delta Point Pro footprint and cannot directly interface with the optic’s Max footprint. I believe that Springer Precision makes an adapter plate.

https://shop.springerprecision.com/o...sauer-p226-x5/

I’m still waiting on a Romeo 2 (dot circle reticle) that has been back ordered at EuroOptic since December. That one will go on a P226 X-five Legion. That one should directly mount to the DeltaPoint Pro footprint and the optic’s integral rear sight should work perfectly with the taller factory front.

[RJ]

Revised the graphic with the latest data, and reordered the blocks roughly by "size".

Sig's "24 mm" sizing seems quite at odds with actual user supplied measurements for the Romeo X optics. Hmmm.

[HeavyDuty]

I wonder if that 24mm spec is diagonal, like a TV?

[RealSelf]

I'd say that I really like the idea of both Romeo-X models having the same window size as you can go from small to full pistols and have the same exact sight picture. Is this a huge deal, no, but it's nice.

[RJ]

I wonder if that 24mm spec is diagonal, like a TV?

Ken you might be on to something. I drew a 0.94" circle and put it behind a box of the size you reported. Lines up very close.

[RJ]

Revised graphic.

[Sensei]

It looks like the Trijicon RCR will be sandwiched between the RMR and 507c/EPSc at 0.88 X 0.64