I disassembled mine yesterday. It didn't look like it had been disassembled recently, but it may have. My barrel (under the top handguard) was marked KO-91/30 Made in Russia, with some other marks and the caliber.
I googled KO-91/30 and apparently it is some sort if importer mark (Molot) from what I can tell, even though it has the PW Arms etching as well. The stock has a lot of cosmoline, but I started floating the barrel. Once I can get the cosmoline out if the stock, I'm sure it will sand much easier and faster.
I also cleaned it thoroughly, and the barrel was really nasty. 4-5 black patches with Hoppes #9. I'm ready to hit the range and try it out!