Pissed Off Patriot
.223 Rem
"Bederow said the inside of the printed gun had no working machinery, and it was simply intended as a toy."
https://nypost.com/2018/11/07/lion-king-staffer-who-3d-printed-gun-says-its-just-a-prop/
https://nypost.com/2018/11/07/lion-king-staffer-who-3d-printed-gun-says-its-just-a-prop/