It has nothing to do with those shitty commie sights, they don’t even make anything that’s the same footprint as the RMRCC.
Trijicon fucked up and made it a retarded footprint that doesn’t match anything out there and the slimline guns it’s intended for are all cut for RMSC so you end up with a plate that puts the whole unit over top of the slide. Fucking dumb, they should have made an RMSC compatible optic so there was a reliable option instead of all the Chinese garbage and they would have had a winner.