It is interesting reading about the many faults that some owners have reported about this particular gun. Clearly, something must have gone very wrong with the quality control of some guns during the production run in which the manufacturer was struggling to meet the demand.
However, I can only report that my own experience has not included any of the listed issues described above by Krisko. I have now been through over 5,000 rounds of the guns preferred diet of .177 Webley Mosquitos and have removed the barrel several times for cleaning and also to swap for the .22 barrel and probe assembly. The gun has had no leaks and as yet no issues at all with leaking o rings or barrel security. I haven't even bothered to change the barrel o rings which should be done regularly according to an item I read elsewhere.
I have absolutely b----r all to do with any manufacturers or importers so have no vested interest in exaggerating or talking bull.
I also very much doubt if my own gun is the only one in the U.K that appears to be performing as originally designed. Still, it would appear that for the time being I must be very much in the minority in enjoying a gun that is for me personally great fun to shoot.
Andy