hey guys, just wanted to let you guys know how I fixed my kc-02.
- because the outer barrel is bolted into place on the receiver only on the lower side of the barrel, if you torque in the two bolts too much it forces/pulls the outer barrel down. To fix this i just put a couple layers of electrical tape under the outer barrel to wedge it up.
Here's a photo to give a rough idea of what I did... (this was too much tape)
this along with a clean hop-up fixed my issue perfectly. I came up with this after i noticed that the back of the receiver seemed to droop down in relation to the front of the barrel.
This gun is crazy accurate! power went up considerably with a 510mm tbb. It has little too much power now. I will be installing the steel bolt and maybe getting a shorter tbb.