I tried the M933, also the HK416 (the one I was most looking forward to seeing).
Comparing the SRC M4 Gen 3 to KJ GBBR, I'd say AEG is always more reliable while GBB's are hell of alot more fun to shoot. So the answer is it depends. When I need a gun that I can absolutely depend on, I go for AEG's... still.
Ken
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