hatsan pistol is it junk?

First of all, they should not call it a pistol. It's too big to be called that. Secondly, they did make a number of revisions. Mine was very reliable until I started modifying it. Mine was also VERY accurate, but you have to get past the awkward size of the thing, and the quite heavy and long trigger pull. Nothing to be done about it. It's integrated with the action of the gun. I used the folding stock on mine most of the time. If I did it again, I'd likely just get an aea semi auto, though also a bit large for a pistol, not as bulky as the sortie.