Hey Steve,
It's approx. 16 inches from nose to tail and 6 inches high from ground to top of blade/rotor. Width is around 4" from skid to skid. I have the USMC version and the guns add another 2.5 inches to the width.
Blade is around 17 inches long which adds around 3.5 inches from the end of nose to the blade's end.
I have it on a higher shelf making it a little hard to measure and because it's delicate, did not want to move it. These measurements should give you a pretty good approximation.
Hope this helps.