Modified from a T-65 X-Wing printable, this print builds into the rocket pictured.

Assembly instructions found here:
https://www.rocketryforum.com/threads/18mm-x-wing-build.195533/

I've flown the model several times.

It requires the following to fly:

• 1/16" Balsa Wings. I used a scale drawing and cut some simple wings
  -18mm rocket tube.
  -Engine plug
  -Recovery gear (parachute and shock cord)
  -Nose weight to balance CG forward of the nacelle caps (CP is just behind the leading edge of the wings, if built with scale wings).

I will update with a link to a build post on the Rocketry forum.

Note, this reocket flies well with a Estes C6-3 or Quest C12-5 motors

*Edit Notes:
1) Added a wing pattern for the balsa wings
2) Updated balsa used to 1/16" from the 1/8" mistake