I think we've reached the limit of the information / observation spectrum. I was going to post until I read all the threads. I've nothing more to add really. Steyr did hand stamp the "bnz" as shown, and on Radom pistols as well. It certainly is a handstamp on the OP rifle and could be good. However, after that it looks like someone turdified and polished it up, ruining the barreled action, which is the only thing legit. The humper had some knowledge, but not enough.