Interchangeable Optic System Plate: Trijicon/Holosun Footprint (used with Holosun 507C) Fits the following: Trijicon RMR Trijicon RCR Holosun 407C Holosun 507C Holosun 507 Competition Holosun 508T Swampfox Kingslayer Swampfox Liberty Riton Tactix PRD $100 obo
