Yep, Sure looks like a Ringmaster "knock off" to me. Reasonable kit price and then you have another $100 + worth of power system to make it fly (to say nothing of charger and power supply). Still it is good to see "turn key" electric control line expanding. It should fly reasonably well.
I just today received a prototype Baby Ringmaster kit (Sterling S13) from Pat King. Beautiful plans and laser cut parts with quality balsa. I intend to build it as an electric and will give an update when I have it finished. The Baby has a built up wing and the usual Ringmaster profile fuselage. Span is 21 inches so it is comparable to this RingRat.