Hi all. Great forum. Lots of good info. Inherited my SKS a while ago but just got around to checking it out. Still has good bit of cosmoline in it so going to take some cleaning. Whoever owned it before my Dad tried to mod it to use AK mags. Had some kind of plastic block in front section of mag well but it appears the little plastic tab that engages the front of the AK mag was broke off. Fortunately it came with the original 10 round so that's back in now. Problem was he installed an extended latch intended for the AK mag and it won't release the bottom of the original mag to dump the cartridges. Going to have to find a replacement or grind that one down. All appearances is this is a late model SKS. Can't find any arsenal stamp anywhere. Has a SAMCO import stamp under the barrel and someone pencil engraved norinco on the barrel under the upper hand guard. Serial number doesn't fall into any of the known ranges here on this board so I'm stumped on its age. Trigger guard, receiver cover, bolt and stock all match stamped 164xx and receiver just stamped 111.64xx. Any ideas guys? Like I said, great board, lots of info. Looking forward to hearing from you.