How the sound of 'John Wick' was crafted without real guns

View"John Wick: Chapter 4" is a masterclass of an action film.

Created by famed stuntman and director Chad Stahelski, the latest film has been praised by action fans for its "buffet of bullet casings" and "masterful" dedication to the "action movie art form."

But for a franchise filled with fight scenes and guns, every...