I saw a cool looking heli in the sky yesterday and can't find it on the internet, i really want to know what type it is.

It was black and had a rather rigid shape, the most noticable feature is that it didn't have a tail rotor, instead it's tail looked more like that of an aeroplane's one. The tail looked like 2 arms sticking out the back with a spoiler on each side (Probably for stability)

Any ideas? i really wanna know what type of Helicopter it was