NOTE: Army issued M17/M18 slide has slightly different plate mounting, the OPF-P320, RMR is incompatible with Army issued M17/M18.
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, AXG, and RX.
Machined in 4140 steel and black oxide coated, 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. The removal of the P320, commercial version of M17/M18 sight plate cover isn't as straight forward as the Glock MOS, please follow this link for step by step instructions:
https://youtu.be/00g-Wpr8tMw
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.
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-M17, RMR, RSD is shipped with two 4-40x3/16 Allen screws (plate to slide), a 3/32 Allen key, two T10 5-32x3/8 screws (sight to plate) and a packet of VC-3.
Torque values:
Plate to slide: 12.5 in·lb
Sight to plate: 12 in·lb
Billet machined in 4140, Melonite coated.
OPF-P320, RMR, RSD is a Forward Controls Design and Tangodown collaboration. Proudly designed and made in the USA.
NOTE:
OPF-P320, RMR, RSD was designed and made for Trijicon's RMR, though Holosun 507c, 508T and 509T (with the adapter plate it comes with) also work on it, we do not guarantee fit and function for these sights on OPF-P320, RMR, RSD.
Army issued M17/M18 slide has slightly different plate mounting, the current OPF-M17/M18, ACRO is incompatible with Army issued M17/M18, AXG, and RX.
OPF-P320, RMR, RSD is compatible with SIG P320 X5 Legion, commercial M17/M18, slides with Romeo1 Pro/DPP cut.
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