G&g m4 a1 combat machine electric gun

new model available with semi/full auto selective fire
retrachable stock and 14.5 inches metal barrel
reinforced nylon fiber body,stock and handguard
450rd magazine included
fit mini/lipo battery (not included)
Weight 2280 g
Length 790/960mm (internal barrel 363/407mm)

Technical data
-reinforced 8mm gear box with metal bearing
-1 joule power tempered spring with seal nozzle
-reinforced steel gears and alluminium cylinder
-reinforced piston with polyamide piston head
-hi torque motor long axle
-adjustable hop chamber with 363mm inner barrel