I guess it is around 1 kg. I don't have the stuff at home, but I have looked in some stores where I planed to buy the things and calculated how much it weight.

And here is what it weight, the airplane it self whey around 350-400g, servos around 40g etch, receiver 30g, battery around 200g, and fuel 200g, and some other things around 100g.

So I guess its around 1 kg if I didn’t forget something.