in 4140 steel and melonite coated, OPF-P320, RMR, 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
OPF-P320, RMR is a drop
in adapter for superb Trijicon RMR sights.
OPF-P320, RMR 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.
Plate to slide: 6 in·lb
Sight to plate: 9 in·lb
Billet machined in 4140, Melonite coated.
OPF-P320, RMR is a Forward Controls Design and Tangodown collaboration. Proudly designed and made in the USA.
OPF-P320, RMR, 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.