I should add that I'm around the 1000 round mark +or- a few with one of mine (which really isn't that much) and the only thing of concern is the firing pin hole in the bolt face is starting to oval slightly. So far it's not to the point where this is causing issue BUT I suspect that the bolt will need replacing LONG before it should.
The inside of the receiver is showing a slight amount of wear from the charging handle but nothing that warrants any concern. Mine looks like it's going to go for a long time before it wears out, IF it ever does.
For the price I'm satisfied with mine BUT dolar for dollar,I have no doubt that your average $1100 AR-15 is going to FAR outlast your $1100 WK. If it weren't for the WK's NR status it would be a no brainer to simply get the AR-15 instead.
If the product is supported and a few replacement parts are available for years to come I don't have a problem with it.
If other people are having their receivers wear out to the point that it causes issues with function then the product definitely needs some re engineering.
How long these will last is still an unknown. It seems that some people are having better luck than others.