Schwarzlose machine gun 1912

The Schwarzlose machine gun was used by the Austro-Hungarian armies during WWI. To avoid Hiram Maxim’s multiple patents on machine gun mechanisms, the Schwarzlose uses a delayed-blowback mechanism. The breech is not locked to the barrel when the cartridge is fired, and so the breech and cartridge are blown to the rear as the bullet accelerates out of the barrel. To restrict the rearward movement of the breech until the bullet has exited to barrel, the Schwarzlose uses a series of levers arranged so that