Id be willing to bet none of the other large producers check the stock bolt tightness either, especially low priced models as that would be labor intensive which would up costs.
I have seen only one shotgun with a loose stock and it too was a Browning. It came from Miami in August to MN. I shot it that fall and put it up until early Feburary. I pulled it out to shoot a local tourney and felt the looseness when I opened the gun. 1/16-1/8 of a turn had it tight again. Odds are the change in humidity caused the looseness as the gun was a couple years old before I bought it. A new gun can suffer the same problem or the stock could have been a little green when pulled from the rack and dried a bit by the time it was sold. In any case, I can't blame the manufacturer for a "problem" one should notice before damage occurs. It's kind of like turning up the radio when a knock is heard in the engine. If one does not recognize the problem before it causes damage, it is still not the manufacturer's fault.
Probably the weakest link is the internal parts. One thing all critiques I have read on Turkish (actually all guns built to low price points) has been the large variance in internal part quality and finish. The hardening of wear surfaces can vary between minimal to adequate which can affect the time between part replacement. How well these parts fit together also plays a role as the fit and finish can affect how quickly a part fails. Huglu has suggested their guns should go as many as 50,000 rounds with recommended care before needing a rebuild. The key word is "should" with a number of inexpensive guns not reaching that point.
My former Citori was well over 150,000 rounds and did not need rebuilding yet. My current Citori has about half that number of rounds and is far from needing a rebuild. If/when it reaches that point it will cost me $380 to repair for another couple hundred thousand rounds. If a low price point shotgun needs a rebuild at a much lower round count and a similar price to rebuild, if someone will even do so, would it even be cost effective?
I have been down that road more than once in my early years, I learned my lessons then. All I can do is give the best advise I can based on my experiences and observations based on my usage and the risk of down time I am willing to put up with. With age and experience my acceptance of problems and potential problems haste grown steadily less.
