Material: plastic ( metal inner barrel ).
Plastic gearbox, metal gear
Shooting 6mm 0.20g bb
Velocity: 85m/s, 280FPS, 0.7J, adjustable
Magazine: 300-350rds bb                                            
Powered by: 8.4V battery electric              
extensible and detachable buttstock
1:1 ratio, exact same size to real firearm