Forward Controls Design Trijicon RMRcc Full Size Glock Gen 5 MOS Adapter Plate Black OPF-G RMRcc. This Glock compatible mounting plate is designed to fully support the optic in the front and rear with threaded posts that connect with the sight-to-mount screws ensuring minimal sight movement. The adapter plate is made of heat treated 4140 steel and black nitride coated to increase the ability to avoid corrosion and to increase the lifetime of the mounting plate. Specifications for Forward Controls Design Trijicon RMRcc Full Size Glock Gen 5 MOS Adapter Plate: Manufacturer: Forward Controls Design Red Dot Sights-Footprint: RMRcc Optic Cut: Trijicon RMRcc Fabric/Material: 4140 Steel Color: Black Finish: Nitride Gun Make: Glock Package Contents: Forward Controls Design Trijicon RMRcc Full Size Glock Gen 5 MOS Adapter Plate Forward Controls Design OPF-G RMRcc: Trijicon RMRcc Full Size Glock Gen 5 MOS Adapter Plate Black