- Full Metal Real Steel M4/M16-style Receiver Construction for Airsoft use (World Patent Pending)
- Quick Inter-changeable Upper Receiver
- Quick Change Power Module (300/400/450 fps)
- 100% Compatible with MARUI Hop-up & Inner Barrel design
- Compatible with most MARUI Type-2 Gearbox Components (Incl. gear sets, motors, etc.)
- WE Spring Release System (World Patented)
- Super Low Power Consumption design