When the G&G Armanent SGR556 debuted last year, it features the new G3 Split Gearbox System which Toronto Airsoft shows in this 60-second ASMR video. The G3 technology features a quick spring and MOSFET module changes. The innovative hop-up chamber has a built-in power cut-off and is compatible with most M4 magazines. It is adjusted in front of the gas block and locks into the upper gearbox for improved compression.