RMR Cover Plate
thingiverse
Brownells' RMR Cover Plate is designed specifically for their G19 slides, but be aware that they cut their slides slightly differently than other manufacturers, so it might not fit on your particular slide even if it's also a G19.
Download Model from thingiverse
With this file you will be able to print RMR Cover Plate with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on RMR Cover Plate.