Forward Controls Design Trijicon RMR RMR HD RCR SRO Full Size Glock Gen 5 MOS Adapter Plate 17-4 Stainless Steel Black OPF-G RMR 17-4 SS. The OPF-G is designed to fully support the optic with minimal movement eliminates the need for a sealing plate and includes trusty Torx screws. Finished with a slick salt bath nitride finish the Forward Controls Design Optics Plate is a must-have for any GLOCK MOS owner. Specifications for Forward Controls Design Trijicon RMR RMR HD RCR SRO Full Size Glock Gen 5 MOS Adapter Plate: Manufacturer: Forward Controls Design Red Dot Sights-Footprint: RMR Optic Cut: Trijicon RCR Trijicon RMR Color: Black Weight: 0.83 oz Finish: Nitride Gun Make: Glock Gun Type: Pistol Package Contents: Forward Controls Design Trijicon RMR RMR HD RCR SRO Full Size Glock Gen 5 MOS Adapter Plate Forward Controls Design OPF-G RMR 17-4 SS: Trijicon RMR RMR HD RCR SRO Full Size Glock Gen 5 MOS Adapter Plate 17-4 Stainless Steel Black