Observers of the twin-engine stealth fighter long had speculated that the J-20 lacks a cannon.
Here s What You Need To Remember: During the Vietnam War, air crews flying early F-4s and other fighter types quickly came to regret that design choice. Close, chaotic dogfights in crowded airspace favored traditional gunnery. “That was the biggest mistake on the F-4,” John Chesire, who flew 197 combat missions during two tours in Vietnam, told Air & Space. “Bullets are cheap and tend to go where you aim them. I needed a gun, and I really wished I had one.”
China s J-20 stealth fighter doesn t have a gun. That could be a problem for the Chinese air force.