The Red Rocket is a 3D printed solid shotgun projectile, or slug. made public around May 2013. It was printed using the Solidoodle 3 3-D printer. The slug was created by an American named Jeff Heeszel.
The printer used to create the bullet retails around $800 as of September 2014, and it took the printer about an hour to produce the slug. ABS thermoplastic material was used in the production of the slug. During testing, the slug fired from a Mossberg 590 shotgun, penetrated a 2×12 piece of pine wood, and created a hole in a wire reel.
It is considered as the first 3D printed bullet, according to the creator each plastic slug was 3D-printed but a small lead shot was then added to give the bullet weight and enable it to travel and pierce the target.