I have a "Red 9" Marked Broomhandle. It is a Mauser , WaffenFabric, Oberndorf A Neckar. No question it is a 9mm Luger caliber. No idea if the stocks are original.
The SN on the upper receiver / Barrel is 5074XX, and the SN on the frame is 6538XX. It appears that the barrel had been cut off at some time, with a new barrel added. The barrel is "loose", but if turned in tight it shoots OK.
The barrel is "ringed", which is different from anything I have ever seen before. Also, it appears to have been re-blued, with an anomoly on the sides of the magazine, almost like the bluing didn't take.
What do I have?