S&T M4 FF3.5" Challenger Line G3 AEG BK (COLT engraved)

・Manufacturer: S&T
・Material: Frame (nylon fiber) / RAS (metal)
・Total length: Approximately 630mm - 686mm (when stock is expanded and contracted)
・Weight: Approx. 2,220 g
・Magazine: 340 rounds, spring-fed bullet type *Made of steel
・Connector shape: Mini
・Full/semi-auto
・Variable HopUp system
・14mm reverse screw
・Mecha box: QD type
・Equipped with S&T G3 electronic trigger