Featuring durable CNC-machined 6061 aluminum construction, the C&H Precision V4 MIL/LEO Trijicon® RMR / Holosun® Optic Mounting Plate for Glock® 43X / 48 MOS. Steel mounting hardware (included) provides a strong, sturdy, snug, and secure fit for your Trijicon RMR / Holosun optic, and a patented stainless steel T-nut provides six to seven threads of engagement for added security and the ultimate secure fit for your optic. Plus, the mounting hardware is replaceable, so you don’t have to replace the plate if something breaks or is lost. Even better, each plate features a MIL-SPEC type III hard anodized coating for long-lasting corrosion resistance in virtually any tactical environment.  Compatible with Trijicon RMR / Holosun optics ONLY.