Forward Controls Design - SIG P320, M17/M18 adapter plate w/ rear sight dovetail for Trijicon RMR

Army issued M17/M18 slide has slightly different plate mounting, the OPF-P320, RMR, RSD is incompatible with Army issued M17/M18.OPF-P320, RMR, RSD is compatible with RMR HD and RCR. If you have an RCR, you must use the capstan screws that came with the RCR.If your RMR HD came with screws, do not use the 6-32 x 1/2 screws that came with RMH HD as they're too long, please use the 6-32x3/8 screws Trijicon provides, or our 6-32x3/8 T15 screws we provide.OPF-P320, RMR, RSD is compatible with P320 X-Five Legion, Legion Carry, and DP Cut. It is not compatible with P320 Pro Cut, P320 sub compact, X Carry, AXG, and RX.From October of 2023, we've begun to transition T10 sight to plate screws to T15.Machined in 4140 steel and Melonite, OPF-P320, RMR, RSD is a new member of our OPF (Optics Platform, Forward Controls) line. We again eschew aluminum for this application, and continue to use steel as other OPF plates, we prefer steel plates for steel screws. 4140 steel costs more and takes longer to machine, we use it extensively on other products. We 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.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 sight into the dovetail, doing so will damage the dovetail of the plate.We will stress the importance of holding the LCI (loaded chamber indicator) with your finger or a piece of tape while removing the plate from the slide, the LCI spring is very small and fragile, and easily damaged. No need to make this avoidable $5 mistake as we did.OPF-P320, RMR, RSD is shipped with two 4-40x3/16 Allen screws (plate to slide), four T15 6-32x3/8 screws (sight to plate) and a packet of VC-3.Torque values:Plate to slide: 12 inA lbSight to plate: 12 inA lb