This is interesting...
Custom DWM Luger Style Carbine with Shoulder Stock and Leather Carrying Case
http://www.rockislandauction.com/vie...id/52/lid/3453
These 1920 Navy carbines are somewhat of a rarity as they were usually produced or assembled on special order only and were fabricated or assembled using surplus WWI Luger parts. Since there were so many standard 1920 Artillery and carbine models readily available from DMW at this time, not many Navy models were actually produced, with some of these longer barrels pistols actually were assembled in the United States by the importing retailers such as Bannerman's.
Estimated Price: $3,500 - $5,500
The low estimated price caught my attention...but looking at the pics, it's pretty obvious it's not a kosher Luger carbine...
(Click on image to isolate; then right-click & 'View Image' for large image link)