G&G sold in Canada have copper and zinc internal parts as opposed to sturdy metal. ICS internals have been kept the same. From dealing with both models I can say from experience that I get about 50% returns within the first month of my guarantee policy of G&G guns for broken pistons, gearbox screws missing or popped, and other defects. ICS guns only return about 12% of the time and those only for broken plastic piston which is easily changeable and an understandable defect.
The decision is easy