Another photo to add.. 5 digit S/N appears to be part of a 7 digit S/N, which looks to be preceded by 1 - (1 dash).. 1-140087X, stamped on the barrel, barely visible above the replacement stock, and a triangle of triangles immediately to the right of the number. Further to the right, after the triangle stamp is SKS 7.62 CHINA. ' can't see anything else without taking it apart, which I am not adept with. I did see the triangle or triangles associated with the number 0306 somewhere..Attachment 93618Attachment 93619 Help?