OPF-G43x/48, RMRcc (Optics Platform, Forward Controls, G43x/48, RMRcc) is the latest member of the OPF line. G43x and 48 MOS slides are designed for direct mounting of the Shield RMSc sight. Trijicon's RMRcc is longer, and requires an adapter plate which also necessarily raises the mounting surface in order to mount an RMRcc. RMRcc has its own footprint. Gone are the two lug holes in front, these are replaced by two larger diameter threaded posts (bosses) through which the sight to mount/plate screws are installed. The sight to mount/plate screws are also significantly strengthened, though with the OPF-G, RMRcc design that holds the sight immobile on the p Mfg: Forward Controls Design