Sorry, I have repaired enough new Norinco M305's to know there absolutely is quality issues. Brand new rifles coming from the factory missing trigger mechanism and bolt parts, incorrectly cast flash hiders, crooked op-rod guides, incorrectly index barrels, bolt latches that don't hold open, magazines that won't fit, grossly out of spec head-spacing... etc. I could go on.
Unless Norinco has completely revamped their whole QA program, I would certainly look at a VZ52/57 for near the same price or a Mini-30 for a bit more before I would even consider an M305A... my 2 cents.