This can happen in any studio where the staff is uneducated about IP issues, where the staff includes people who just don't care, where crunch and deadlines force people to take questionable shortcuts. This doesn't just happen to outsourcers in Elbonia only.
I was actually wondering about that. I wouldn't be surprised if some random artist at some random outsourcing studio in some random country took it off your site and used it. I looked pretty close at some of the texturing details on that gun, and they are questionably similar.
Man that sucks. Glad to see that you've been able to get word back regarding this. Probably another potential problem that can result from outsourcing. That said, it could just as easily happen to any company that isn't paying attention to what is coming in/out of the pipeline. :\
Wow, that is a bummer. At first glance I didn't see the similarity, but yeah, they totally chopped up your texture and grabbed the bits they liked. I hope you can get something worked out. At least it seems like the studio themselves were unaware. It looks like at least one artist, possibly a whole outsource company might…