Have you ever wondered exactly how many iPhones will stop a 5.45x39mm round shot from an AK-74? Well, besides the fact that it seems like an oddly specific query, you’re about to get your wish.
The 5.45x39mm was designed by a group of Soviet engineers to replace the venerable—and still highly popular—7.63x39mm cartridge. To that end, its purpose was to serve as a light-weight, high-velocity round that allowed soldiers to carry more ammunition. It was hardly made to kill shiny white smartphones.
That said, it doesn’t seem to be bad at it either. How many iPhones do you think a single bullet will go through? Hint: the answer is below.