I have one of those 20" Norincos and it is the most accurate AR I've ever shot... And I'm doing it with iron sights. They know how to make an AR.
The T97 is a rifle designed to be easy and inexpensive to produce in massive number to hand out to millions of conscripts who probably spend more time on a parade ground then in the sticks. It's feather-light and well balanced. Mine was extremely reliable, easily breaks down into simple, large parts, and it's probably the easiest semiauto rifle to clean I've ever seen.
It does what it's designed to do, go bang and not break. But it has no finesse. The sights, already a poor design, are even shoddier on the versions the Canadian Market gets. The trigger is light and smooth but does not break predictably. These are things that seriously effect accuracy, and the striker system probably doesn't help.
Just know what to expect, and you'll like it a lot. I liked mine!