Sorry to be "that guy" but the Estes Nike-X isn't a scale model. It is a very good looking scale-like design, and as soon as my Hobby Lobby has them in stock I'm using my 40% coupon, but it isn't a scale model of any actual prototype. Kinda, sorta, if you squint a bit, it resembles the Nike-Zeus. I think that's what inspired the original Estes design.