will we be getting these?
https://www.thefirearmblog.com/blog/2021/06/25/p320-xcarry-legion-pistol-arrived/
It says it's compatible with a bunch of optics that all have different mounting patterns. Isn't it only really milled for the romeos?
Any optic will pretty much work with the various adapter plates that are sent with either the gun or the RDS.
It's notable that the Sig Romeo 1 (not the Romeo 1 Pro) will not fit on any Sig product.
That would be news to my 320 RXs. I think you may have mistaken what you saw. The Sig Romeo 1 does not fit Sig 320/M17 model as it has a different optics cut as per request from U.S. military contract.
From Sig.
"PLEASE NOTE:
The ROMEO1 is meant to mount directly to SIG 320RX pistols, as well as to many other popular pistols on the market, by utilizing our available Handgun Adapter Kits.
The optic cut on the P320-M17 guns are cut per the MHS contract, thus are not compatible with the ROMEO1 optic from SIG SAUER. New SIG Sauer Electro-Optics reflex sights which are compatible with all M17 pistol variations will be released in the second half of 2019."
P.
I stand corrected.
So, the conclusion, the Sig P320 RX is the ONLY handgun to which the Romeo1 can be mounted without the use of an adapter plate and dovetail interface.
I have a Romeo 1. Its a good RDS, and the dovetail interface works surprisingly well. Just not my first choice for mounting options.
No, the P320 X-Five also will take the Romeo 1 without an adapter plate. I have one mounted on my X-Five.
The Romeo 1 Pro (same foot print as the Delta Point) fits the X5 Legion.