I'm having pretty much the same issue with full auto as kullwarrior. I've done most of the checks too and can't find anything that looks wrong. I made an observation 10 minutes ago while doing some maintenance/tinkering and I noticed that when fired in full auto, the bolt does a full cycle and then almost half of another cycle before going into full battery before the next shot. This happens regardless of single shot fire or long bursts when the selector is in full auto. Set to semi, the cycle is perfect.
I'm relatively new to GBBRs so I don't know what this extra half a cycle means, anyon
