Factory Plate 3 for Trijicon RMR, Holosun C-series, and Springfield-listed 509T optics on XD/XD-M OSP pistols
Springfield's Plate 3 is the exact XD OSP product choice for the Trijicon and Holosun group in the factory fitment table. The store sells it as one selected plate, not as a four-plate bundle.
Add the Springfield XD OSP Plate 3 Trijicon / Holosun to your build and see how it enhances your platform.