Forward Controls Design Trijicon RMR/SRO and HK VP9 Adapter Plate Black OPF-VP9 RMR. Featuring tight tolerances and front/rear fences it ensures minimal movement and a stable fit for your optic. Made from heat-treated billet 4140 steel with a black nitride coating for added durability. Specifications for Forward Controls Design Trijicon RMR/SRO and HK VP9 Adapter Plate: Manufacturer: Forward Controls Design Red Dot Sights-Footprint: RMR Optic Cut: Trijicon SRO Trijicon RMR Fabric/Material: 4140 Steel Color: Black Gun Model: Heckler & Koch VP9 Finish: Nitride Gun Type: Handgun Gun Make: Heckler & Koch Package Contents: Forward Controls Design Trijicon RMR/SRO and HK VP9 Adapter Plate What firearm models does the manufacturer say Forward Controls Design Trijicon RMR/SRO and HK VP9 Adapter Plate is compatible with? The manufacturer says that Forward Controls Design Trijicon RMR/SRO and HK VP9 Adapter Plate is compatible with Heckler & Koch VP9Forward Controls Design OPF-VP9 RMR: Trijicon RMR/SRO and HK VP9 Adapter Plate Black