S&T T21 Explorer Ver. High Cycle BK

・Material: Lightweight resin frame/Precision aluminum inner barrel/Resin outer barrel
・Total length: 690mm
・Weight: 2450g
・Recommended battery: Nickel-metal hydride 8.4V mini battery (sold separately)
・Connector shape: Mini
・Bolt lock system
・Included magazine capacity: M4 300 rounds spring type
・Semi/full auto
・14mm (positive thread)
・Variable hop-up