There's manufacturing data for /26\ (Jianshe) arsenal, at least, for the early SKS made there. These are C&Rs based on date of manufacture.
The one I got is from 1959, for example.
"I would rather be exposed to the inconveniences attending too much liberty than to those attending too small a degree of it." - Thomas Jefferson
"Thou shalt not interfere with the Second Amendment rights of "law-abiding" citizens who want AK-47s only to protect hearth and home." - Paul Helmke finally gets it :)
Originally Posted by SJgunguy24
Some people are so open minded, their brains have fallen out.
WTB: Saiga .223 bolt; HK G3 bolt; Chinese AK pistol grips; milled AK cut receiver pieces and stubs.