Specifically engineered for optics-ready Walther® PDP 2.0 pistol slides, the C&H Precision V4 MIL/LEO Holosun® 509T Optics Steel Mounting Plate is an affordable and reliable aftermarket mounting plate. Precision CNC-machined all-steel construction offers unparalleled strength and stability, while the corrosion-resistant matte black finish offers superior protection against moisture, rust, scratches, and corrosion. The included 416 stainless steel T-nuts maximize thread engagement for quick installation and reliable stability while on the move. Compatible with Holosun 509T-pattern optics ONLY. ;This plate will not work with the Holosun HE509-RD ACSS Vulcan. Plate is compatible with the PDP 2.0 cut and will NOT fit the 1.0 model.