My most newly acquired SIG P365XL has a RomeoZero & wanted one for my Springfield Hellcat OSP, found one on the forum used for $80
I just mounted it up yesterday & had to cut the mounting screws shorter & afterwards noted that the front sight is blocked by the rear sight of the RZ & the step & button on the RomeoZero too
I decided to try an open up the rear sight of the RomeoZero to match the U Notch rear sight of the Hellcat with a small round file, a needle file & a piece of 120 grit sandpaper glued to a chop stick
I came out OK, but the front sight is still partially blocked by the step behind the lens & the control button
I will try an load some photos from another forum & see if they show up

Personally, between the Romeo Zero, and Springfield's offering for the Hellcat line, the Hex Wasp, I'd probably go with the latter. In point of fact, if fitment wasn't an issue (and on the Hellcat it is), I'd go with the Holosun 4/507K over either.

I'd go with the Romeo Zero as I have a lot of good experience with it.

In fact, the OP barely beat me to buying that particular one from this forum.

He had a 2nd one I should have bought too
It does have a tiny scratch on the front of the lens you can't see unless looking very hard

I like how I was able to make the U-Notch on the RomeoZero & it works better for a sight picture

Need to get to the range & shoot these two

I sinned = SOLD My SIG P320 this morning but made $50 profit & freed up some funds
missed out on a $200 Ruger Stainless 1911 Commander at the gun store, a family was selling the Misses new Ruger bought with pandemic payments last year, It had been in her purse for about a year & never fired
Gun store scored on that one, I talked to them in the parking lot but didn't ask

Here is the sight picture before cutting the U notch in the rear of the RomeoZero

7 weeks and I am still waiting on my Wasp replacement from Springfield Armory. Won an OSP at a gun bash so I figured I could spring for the RDS. Mounted, zeroed no problems. Went to use the OSP about 3 weeks later for a range session and found my Wasp dead as a swatted bee.

Did a bit of research and finding that they were "getting a bad batch" from this RDS maker. Seems like it is probably made in the same factory as the Holosuns and the Romeo's.

Just got an email Friday that they shipped out my replacement, and the delay was because they had run out of the supply for the replacements. Sounds like there may have been a few thousand or so that were bad. I did like it when I used it for the first session though. I use a Romeo3 with the riser on my MPX, so I'm far from a brand snob or fanboy. Just make it work, and show some intelligence in the desing. Is that so hard to ask???

Got few holsters to allow carry of the Springfield Hellcat & SIG P365XL with the Romeo Zeros
More to come soon on how well they shoot