I have often wondered about stock lugs. Pondered it endlessly....
Now I know, thanks to an on-line auction.
"This is a rare model of DWM Military 9mm Luger without a stock lug. IT WAS ISSUED TO A HIGH RANKING OFFICER WHO DID NOT NEED A SHOULDER STOCK"
It was so simple, I just couldn't see the forest for the trees...
Boy! Do I feel stupid...or what?