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Did some quick Dr googling-they are a relation to the NS522-similiar in a lot of ways-same as all guns there are some tricks to lightening the trigger etc that can make them shoot even better.

I certainly hope my our exchange helped with this lol.
BTW without hijacking thread I've done some work on the project you helped me with. All the paints gone-alas no bluing underneath. Bought some...

reading back on those EM322's, they got very good writes up-best bang for buck 22 around if you could get them. There is another norinco 22 out there also similar to it but cant remember. Also...