Yes, the P226 Legion models E26R-9-LEGION-R2, 226R-9-LEGION-R2, E26R-9-LEGION-SAO-R2, 226R-9-LEGION-SAO-R2, are all compatible with our Romeo1 Pro, Romeo2, DPP, and RMR (Including the Trijicon SRO).
I have a Sig Sauer p226 Legion and it’s got the holes drilled into the slide for rmr footprint newer sig do I still need a filler plate under the slide to make it work better I have it mounted on my sig now but it overhangs the breech slightly does that filler plate move the Trijicon SRO back slightly