Tater Salsd

Hi group please help me if possible. I have been flying a C186 mini helicopter for a while until I am comfortable with it and want to move up to a 450 size helicopter. I found a Align 450VI on ebay and pulled the trigger and bought it. When it arrived, I wasn't so sure that it is truly is a Align product. The frame is plastic instead of metal or carbon fiber. Did Align make a plastic main frame? Any advice would be greatly appreciated