About the workmanship:
Don't forget that this is, in essence, a prototype annex feasibility study. It is not meant to look pretty, it is meant to be produceable at a reasonable cost price and be functional as well. Minor issues like finishing and checkering can easily be addressed when series production starts. Unlike other copies, at least it feels solid and it works.
We can probably write entire shelves of books on the development of the Chinese economy, but I feel that at least Norinco deserves some credit for giving this a try.