I read your thread as it developed...and remember the issues (bbs left stuck in barrel, jammed up in flash hider...neat), but I don't recall there being a consensus of what was causing the problem (sure swapping out the hopup unit made the problems go away...but what was wrong with the original hopup unit?).
Questions like:
Did the bbs not flow up into and transfer into the chamber reliably? (that shouldn't cause them to jam/stop in the barrel)
Was there a massive air loss, if so where? For the shots that did come out, what was the velocity (and how did you have it setup)?
I'm not looking to rehash the whole troubleshooting thing...I just wondered how many G&P units you had problems with to convince you to never use them again.
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