I found this thread in the B/S/T section:
http://www.pbnation.com/showthread.php?t=3929028
Those pictures were taken by a previous owner of the gun, who sold it to me, and then I traded it to
taz_nut2002. I PM'd taz_nut2002 to see if he sold it already (we traded just a couple weeks ago) and he said he still has it. It seems like the poster is trying to move the gun quickly and clearly using pics that aren't his or of the gun he's selling so I thought it seemed a little bit shady.
I don't know what to do here but I thought I'd give someone in charge a heads-up in case it's more than a simple misunderstanding.