Prototypes! Groupbuild Submission Thread

Welcome to the submission post for "Prototypes! Groupbuild". In this groupbuild (created by u/flounderflound), you will build any prototype vehicle used any year. Be it a plane, boat, gun, tank, AFV, whatever. Anything that was a prototype.

The announcement is located here. Here is the submission post. Please post your submissions here!

Deadline is June 1st!