I read on some forums that the issue is the bucking. As the stock VFC hop-up mechanism has smaller diameter, so the stock bucking is much preferred.
Thinking of the above, if the issue is several BBs fly out in one shot, then several of them is being loaded in the hop-up chamber when the nozzle retracts back? But how could that happen if there would only be 1 BB in front of the nozzle to push forward?
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5.56x45mm + m27 = M249(SAW)
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