I got one for Christmas. In the first forty rounds I had six failures-to-feed, with three different magazines, all of different types, shooting Federal 55gr. Another cleaning and back to the range for another sixty rounds. Got almost to the end of those without a hiccup, was feeling good about the WK, then it fails to extract a spent case and tries to feed another round into it. It jammed that round in really well, to the point I couldn't get the magazine out. Luckily I had the aftermarket bolt release, so I was able to lock the bolt back and carefully pry the cartridge free so I could remove the mag and empty case. When cleaning after that, I noticed a prominent burr on the inside of the left charging handle slot, and I haven't been able to get the hand guard off as the screws were apparently torqued by an angry gorilla.
Also, not entirely Kodiak's fault, but the aftermarket brass deflector's washer got torn apart by the bolt carrier, and part of it is now jammed into a hole in the rear plate which holds the guide rods.
Overall, the rifle is trash, and I will be steering well clear of any and all Kodiak products from now on.