Forward Controls Design OPF Optics Platform for Sig Sauer M17 - Trijicon RMR

Machined in 4140 steel and Melonite, OPF-P320, RMR, RSD is a new member of their OPF (Optics Platform, Forward Controls) line. They again eschew aluminum for this application, and continue to use steel as other OPF plates, they prefer steel plates for steel screws. 4140 steel costs more and takes longer to machine, they use it extensively on other products. They do not deem light weight to be of particular use in this application, but consider reliability and durability far more useful and important qualities. OPF-P320, RMR, RSD is a drop in adapter for superb Trijicon RMR sights. The removal of the P320, commercial version of M17/M18 sight plate cover isn't as straight forward as the Glock MOS. OPF-P320, RMR, RSD has an integrated dovetail for installation of the rear iron sight. The following sights are compatible: Truglo P320 backup sights made specifically for Tangodown/FCD plates. The rear sight dovetail is made for commonly available Glock rear sights, do not use/force a SIG rear