Royal Sovereign Bill Counter Model RBC-1000 Non-OEM Money Stop. 

3d printed replacement made out of ABS for the RBC-1000. 

Color match isn't perfect but it's close and it stops your bill stop from making it rain. 

You are only getting a bill stop, not the money counter, money counter is only pictured to show how it fits and looks.

The sides might need to be lightly sanded to fit manufacture differences between machines, but since it's a friction fit and made out of ABS it's easy to do.