The AC-130 is the world's biggest flying artillery gunship - nicknamed 'Hell in the Sky.' 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. 🎥Air Warriors | Smithsonian Channel Aviation Nation

354K views · 4.9K reactions | Born from audacity and sheer engineering prowess, the devastating power of XM913 makes even the Apache helicopter's 30mm M230 look modest by comparison. This is the most powerful chaingun ever constructed. | Interesting Engineering | Facebook

The M242 Bushmaster 25 mm chain-driven autocannon is used extensively by the U.S. military, as well as by NATO's and some other nations' forces in ground combat vehicles, such as the Bradley fighting vehicle and various watercraft. Originally the weapon was designed and manufactured by Hughes Ordnance in Culver City, California, however it is now produced by Northrop Grumman Innovation Systems. | Military Leak