C&H Precision Weapons FNX-45 Adapter PlateTrijicon RMR SRO & Holosun 407C 507C 508C 508T Black. You shouldn t rely on sub-standard methods of holding them together. Instead rely on the most up-to-date adapter plates from C&H Precision. They re thinner lighter stronger and offer significantly more thread engagement than factory options. C&H Precision machines these red dot adapter plates to precise tolerances on state-of-the-art CNC machines in their factory. Specifications for C&H Precision Weapons FNX-45 Adapter Plate: Manufacturer: C&H Precision Weapons Red Dot Sights-Footprint: RMR Optic Cut: Holosun Trijicon RMR Trijicon SRO Fabric/Material: 6061 Aluminum Color: Black Gun Model: FN FNS Finish: Mil-Spec Type III Hard Anodized Attachment Type: Screw Weight: 0.125 lb Gun Make: FN Herstal Length: 6 in Width: 4 in Height: 0.25 in Condition: New Package Contents: C&H Precision Weapons FNX-45 Adapter Plate What firearm models does the manufacturer say C&H Precision Weapons FNX-45 Adapter Plate is compatible with? The manufacturer says that C&H Precision Weapons FNX-45 Adapter Plate is compatible with FN FNSC&H Precision Weapons FNX45-RSH: FNX-45 Adapter PlateTrijicon RMR SRO & Holosun 407C 507C 508C 508T Black