If you think you've seen bad ones, you should try being the poor sod who has to take them out of the box, remove them from the plastic bag containing the rifle and about half a KG of stinky cosmoline, strip it all down clean, then mount the POS scope that comes with them, before realising it's not fit for sale. When I was in the trade we would send an alarming proportion of JW-15's back to the importers before they even went on the shelf, off the top of my head, problems were included but not limited to:
Chamber not concentric to bore
Safety almost impossible to operate
Open sights canted so badly you couldn't line them up
Muzzle thread not concentric to the bore so the customer shatters the suppressor, and then the replacement suppressor with the first bullet through it
Sear being out of whack to the extent the thing wouldn't go off no matter how hard you pulled the trigger
Bolt being so rough that cycling the action was hard and inserting/removing the bolt pretty much required bracing the butt on the ground and 'mortaring' the thing
Off-centre bore
Seeming normal but then the customer finds you couldn't close the bolt on a live round
Seems to be a quality control issue rather than a quality issue per se; it's a good design and some of them are as good as the Brno/CZ they're copied off, most are rough but serviceable and the bolt wears smooth over time, and the rest are un-useable. I've also seen a few of the wooden stocked ones break through the pistol grip area, it's some kind of nasty Chinese soft wood (Chu wood I believe).
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