I got this gun sans feed tube, but based on the markings and solder scars, it looked like it was a DF to begin with. Since I've been itching for a SC Sheridan that's a bit bigger than a PGP but smaller than the P68-SC, this seemed to fit the bit perfectly. I sent it to Rainman229 to have a stock PGP feed tube installed and it got a polishing in the process:
It just needs a velocity adjuster and a trigger shoe now. And maybe a trip to PPS for some tuning...