Specna arms rock river m4 full metal

I hereby offer my all-metal Specna Arms M4. Replica previously had feeding issues (which was later due to the warehouses)

Replica is equipped with a new delta armory gearbox, new 21.4mm nozzle, new bucking and a 24k motor

Replica is now at 0.7y with 0.32. So just insert a stronger spring using the quick change.

You will also receive a box with various parts:
-grip
-engine
-upper (incl outer, hop, bucking and barrel)
-stock
-bipod