https://youtube.com/watch?v=dKsJe11itb4
The latest development in 3D-printed guns is the Grizzly 2.0, a single-shot rifle that its creator was able to fire 14 times before it developed a crack.
“Matthew,” the gun’s creator, developed a previous prototype that cracked after just one shot; the latest version featured a thicker barrel. In the video he put up of his trial shooting, the user has to take apart the rifle after every shot before loading another round.
Via Breitbart.