JONNY-5

Thanks for the replies everyone, BrightCandle - I did believe the barrel was brass as well, but when I took it out it is very obvious that it is not brass (silver colour), and the heavy weight led me to believe it was stainless steel. Also the thread appeared on the part of the bucking that meets the air nozzle. So the general idea is that the air nozzle is not meeting the bucking correctly. straffham, you mention that the barrel may be too long at the hop up end, but after 5 months of it working good how would that happen. I shall try a different barrel to see what happens. I forgot to mention that the gun has the pneumatic blowback system. This means that there is a small chamber on top of then gearbox that fills up with air when the piston goes foward. Could an air leak in this chamber cause the problem? Jonathan

Hey everybody, Over the last month or so, I have been trying to tackle a minor accuracey problem that seems to have got the better of me, so I decided to join a forum and see if anyone can help. The gun in question is a G&G top tech RK-104 which I have owned for about 7 months. It came stock with a stainless steel 6.03 tight bore barrel. I use Blaster 0.25 bbs. The actual issue is that the bbs do not hold a consistenet grouping, and 1 in 5 bbs go completley off target. Sometimes the bbs vear left on every shot (I am holding the gun upright). When I say "off target" sometimes the bbs go left, sometimes they drop, sometimes they go too high, and sometimes they go right. It started when I noticed a few small accuarcey problems, in which I believed were simply down to human error (e.g. wasn't holding the gun steady). I thought nothing of it. When the problem gradually got worst, I cleaned and inspected the barrel, where I noticed that a small thread was hanging from bucking. I dissamsemled and replaced the bucking with another G&G green. It didnt fix the issue, and the new bucking actually developed the same small thread after 1 game. I tried 2 different high caps and a mid cap to see if the performance would change, but it didn't. I then did a compression test to make sure the air nozzle was sealing with the bucking. The compression was good. Lastly, I ordered a RWA bucking to replace the second G&G bucking. I was delivered Madbull Shark bucking with fishbone nub, but I installed it anyway. This didn't fix the issue. I re-installed it twice just to confirm i hadn't botched it. I also checked the barrel for visible scratches, which there were none. The only thing that still puzzles me is that the air nozzle spins around if i twist it; is that meant to happen? I am clueless on what the issue is, and it has beaten me. Hopefully you guys can help... Thanks very much in advance, Jonathan