Airsoft Master are expecting G&G SGR556 Split Gearbox AEG to be available soon at their store. The AEG's G3 gearbox is a split gearbox design that allows easy and fast access to the internals. It features an optic sensor module that replaces the selector plate, a patented power cut system that stops the gun after the last BB, a modular QD electronic board that can be removed without opening the gearbox, and a pre-cocking option that reduces the trigger delay. The trigger travel and mode can also be adjusted to suit different preferences. The gearbox uses a standard V2 8mm ball bearing and has an innovative hop-up chamber module with 36 tension steps controlled by a screw.