Model 41 dry fire

First topic message reminder :

What is a safe way to dry fire my Model 41??   Is an empty case in the chamber good enough or is there a dry fire gismo I can purchase, make?  Also where are places I can purchase 41 parts such as a firing or springs etc.   
Thanks in advance

Jim

TonyH wrote:If you have access to a 3D printer, I can send you a STL file to print…..not a plug, but a hammer block. Mo betta!

Apologies for resurrecting a long dead thread, but any chance you still have the .stl file laying around and willing to share?