Strikefast, SilentMatt, Old Corps, and Mag13 thanks for all of the updates. I have been reading up and researching on all of the bull-pup PCPs available sub $1k and you have put out some of the best consumer information I have seen regarding this rifle. It is great to read feedback from end-users who only have an interest in publishing what they are experiencing without any secondary motives (selling said rifles, rifle kits, or parts). It is great to have a counter-point to the vendor reviews, for comparison.
With respect to how tunable this platform is, would you say that this one is pretty "user friendly?" If we were talking powder-based systems, I am in my comfort zone. I don't want to presume that air rifle tuning is identical. If you held my morning coffee hostage, and I had the funds ready to drop, I am waffling (like a politician) between the Kral, Hatsan Gladius, and The Priest, all in .25 cal. (The Priest is an outlier, and least likely due to cost, and what appears to be a very small user base of knowledge/first gen.).
Anyway, to stay on-topic with Kral, I would say it is in the lead, since out of the box, it appears to be performing quite well, can be improved with what appears to be mild tuning, all for a reasonable price. (At least from a relative newbie perspective.)
SilentMatt, I would be very interested to find out the results you get if you end up putting a moderator on this rifle.
Thank you all again for the great information and may all of your pellets always strike home!