Machine Guns are repeating firearms that when triggered will load and fire automatically until their ammunition is exhausted. In 1861, the U.S. Army was offered its first machine gun: Wilson Ager's single‐barrel, hand‐cranked weapon, often called the “coffee mill” gun due to its resemblance to a coffee grinder. At the order of President Lincoln, a few Ager guns were purchased; however, mechanical problems and the opposition of chief of ordnance, Brig. Gen. James W. Ripley, blocked ... As a class of military kinetic projectile weapons, machine guns are designed to be mainly used as infantry support weapons and generally used when attached to a bipod or tripod, a fixed mount or a heavy weapons platform for stability against recoil. The Gun revolution of the world gets bigger, louder and much more destructive by the decade. Lets check out the best machine guns in the entire world. Machine guns are usually divided into heavy-duty machine guns, light machine guns, and sub-machine guns. Heavy machine guns (HMG) are placed on the ground, supported on a tripod, or on a vehicle.