FYI- Just so you know the VFC SCARs' grip, although externally looks exactly like an M4, is not the same inside so you can't put an aftermarket one on it. The meck-box site higher in the lower receiver so the factory grip is taller inside. Pissed me off after I had already purchased a magpul cts and had already started modifying it. Hopefully the Star SCARs' will be different.
I forgot to ask.. If that is case would it effect the gearbox if you place aftermaket motor eg. System high torque?
