[Guy in a garage] has made a 3D printed gun that not only appears to fire in the direction pointed, it can also do it multiple times. Which, by the standard of 3D printed guns, is an astounding feat.

U.K.-based Sabre Defense Industries initially launched its U.S. operations in Nashville, Tenn., to produce barrels for XR15/16 rifles, premium variants of the AR15 and M16 rifles. However, the start ...