Quote:
The Sig optics are the same as a 507K (if I said C earlier, I meant K) which has shorter front posts and no rear posts. An RMSC will fit a Sig/507K footprint but not the other way around.
Many (but not all- non 30 Super Carry Shield Plus and Glock Slimline MOS have all 4 posts) "RMSC" cuts are actually 507K cuts.
Point being, the RMR is too wide and Sig is always going to support their optics, but if this is the same RMSC cut that already exists on the P365, it will allow you to direct mount a Holosun EPS, EPS Carry, SCS Carry, SCS 320, and a few Sig optics.
ETA: looks like Sig is calling it the "Compact (RMSC)" footprint. Which further leads me to think it’s the same 507K type cut on the 365.
Are you saying there is a good chance the Romeo-X Compact would mount onto an EPS plate? I have two LTT 92 RDOs with EPS and a move away from Holosun is personally appealing. The only reason I picked EPS for these was the low deck height allowing for normalish sized irons, and from what I read the Romeo-X Compact is even lower than the EPS.