I bought the Pterosaur by Kopter Rockets, which was started by by Walter Senoski back in the early 1970's in the Pittsburgh area. There is an article in the March/April 2015 Sport Rocketry magazine. I actually flew at rocket meets in the early 1970's where Walter was flying his Kopter Rockets with the helicopter recovery. The Pterosaur is a rocket glider that uses an internal piston to activate the elevons and has no ejecting parts, pop-pods, etc. The kit comes with 4 pages of detailed figures and instructions and all parts. There is also a pattern guide available.