Looking for help with 1917 Artillery Luger

[sheepherder]

Originally Posted by George Anderson

Look at the stock lug. It was ground off in the US circa 1930. I's a WWI bring-back that was "pimped-up" with all the garish swastikas post WWII.

I had noticed the screw in the lug but was too tired to realize what it signified...

I'm surprised that the thin metal of the backstrap would contain enough threads to actually hold that add-on lug and buttstock on. Maybe silver-soldered as well? Odd that the add-on lug wasn't 'blued' to match the rest of the gun...