DPP Titanium Adapter Plate for Glock 17 19 MOS Holosun 407/507C/508T Trijicon RMR/SROMount plate is CNC milled from 6AL4V Titanium billet, which has vastly superior mechanical properties to 6061 T6. This kit includes everything you need to mount the RMR SRO and 407C 507C 508T on your MOS slide. Plug and Play, easy to install, Sturdy and Stable. Not Fit 43X 48 MOS and aftermarket cut slide Update September 2022: This plate is machined to the toughest tolerances, perfectly fits in the MOS pocket to avoid recoil shearing the screws, and