I hope this is the right section to post in.
I have started the restoration of my German captured and used Russian PM-38 12cm mortar. I have started on the breech cup making dummy parts for those that are missing, see before & after attached pictures, I still need to make the fire selector. Sprayed it sand yesterday as I was fed up with the red primer and I was painting other bits sand anyway.
Will post more updates in the future, it will take a while as I have other things to do as well.