When I got my M59/66A1 SKS, it was listed as "unissued" . Hearing about the slam fire issues, and being my first "real" rifle other than my .22, I took it to a very reputable gunsmith and had him clean and inspect it. He was actually very impressed with the condition, and said until he got it it was very likely unissued due to the condition. Then he test fired it and popped it's x39 cherry. So, they are out there. I am going to be gentle with the SKS and use my Saiga as my use and abuse project gun, and baby the SKS. The Yugo 66A1 is quite a bit heavier than the Norincos but I use a bench and bought a bi-pod so once rested shouldn't make that much difference. If you can get a unissued SKS get one, and check the gas tube and ports for corrosion. Fortunately mine had 0% corrosion, but I did buy some Yugo ammo as a nice desert after she's eaten all her Wolf and Silver Bear. Mine came with all the cleaning stuff, but not the log book, unless I misplaced it without seeing it.