The electric three-barrel M197 is the newer of the three rotary “Gatling” guns on this list. It was developed primarily to arm U.S. Army gunboat helicopters with a better weapon than the ones ...

With three side-firing weapons, a 25mm Gatling gun, a 40mm Bofors cannon, and a 105mm howitzer, it's easy to see why it got its name. Explore Subscribe Newsletters Content Licensing Our Partners ...