An unfinished 3D-printed Glock pistol frame. Photos: Jenny Riffle

The 3D-Printed Gun Isn’t Coming. It’s Already Here.

All you need is a blueprint, a polymer, a printer, and a knowledge of government regulations—so you know how to bend them

October 9, 2019 — Yom Kippur, the holiest day of the Jewish year — a young white man attempted to enter a synagogue in Halle, Germany, with what appeared to be at least six