This is how Maxim gun Works, WOG

The Maxim gun was a weapon invented by Americanborn British inventor Hiram Stevens Maxim in 1884: it was the first recoiloperated machine gun in production. It has been called the weapon most associated with the British imperial conquest, and likewise was used in colonial wars by other countries between 18861914. Type: Machine gun Place of origin: United Kingdom In service: 18861959 Used by: British Empire, Romania, United States, Belgium, Canada, German Empire, French Third Republic, Russian Empire, Qing Dynasty, Empire of Japan, Iran, Korean Empire, Ottoman Empire, Kingdom of Italy, First Philippine Republic, Dervish State, Kingdom of Serbia, Paraguay, Argentina, Republic of China, USSR, Spain, Soviet China, Naz Germany, Vichy France, Poland, Finland, North Korea, Albanian Kingdom Wars: Chaco War, Mahdist War, Dervish Resistance, First SinoJapanese War, Second Boer War, Boxer Rebellion, RussoJapanese War, Herero War, Philippine Revolution, SpanishAmerican War, PhilippineAmerican War, Finnish Civ