I'm not sure where people are getting that they are "not accurate". If you could scope it (no one has that I know of..) Groups would tighten up, Very effective accuracy for the type of gun.
Considering that a VZ 58 will pattern sub 2 MOA with good factory ammo, and most SKS rifles will pattern sub 3 MOA... meanwhile the Type 81 will get 5 MOA at best with even the best factory ammo AND with a scope mounted. Its safe to say its almost HALF as accurate as its competition.