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Lewis machine gun

Lewis Gun
Lewis Gun (derivated).jpg
Type Light machine gun
Place of origin United States and United Kingdom
Service history
In service 1914–1953
Used by See Users
Wars First World War
Easter Rising
Emu War
Banana Wars
Irish War of Independence
Irish Civil War
Latvian War of Independence
Second World War
Korean War
Malayan Emergency
1948 Arab–Israeli War
The Troubles
and other conflicts
Production history
Designer Samuel McClean
Colonel Isaac Newton Lewis
The Birmingham Small Arms Company Limited
Designed 1911
Manufacturer The Birmingham Small Arms Company Limited or BSA
Savage Arms Co.
Produced 1913–1942
Variants Mks I–V
Aircraft Pattern
Anti-Aircraft configuration
Light Infantry Pattern
Savage M1917
Specifications
Weight 28 pounds (13 kg)
Length 50.5 inches (1,280 mm)
Barrel length 26.5 inches (670 mm)
Width 4.5 inches (110 mm)

Cartridge .303 British
.30-06 Springfield
7.92×57mm Mauser
Action Gas-operated
Rate of fire 500–600 rounds/min
Muzzle velocity 2,440 feet per second (740 m/s)
Effective firing range 880 yards (800 m)
Maximum firing range 3,500 yards (3,200 m)
Feed system 47- or 97-round pan magazine
Sights Blade and tangent leaf

The Lewis gun (or Lewis automatic machine gun or Lewis automatic rifle) is a First World War-era light machine gun of US design that was perfected and mass-produced in the United Kingdom, and widely used by British and British Empire troops during the war. With its distinctive barrel cooling shroud and top mounted pan magazine, the Lewis saw service to the end of the Korean War. It was also widely used as an aircraft machine gun, almost always with the cooling shroud removed, during both world wars.

The Lewis gun was invented by U.S. Army colonel Isaac Newton Lewis in 1911, based on initial work by Samuel Maclean. Despite its origins, the Lewis gun was not initially adopted by the US military, most likely because of political differences between Lewis and General William Crozier, the Chief of the Ordnance Department. Lewis became frustrated with trying to persuade the U.S. Army to adopt his design and so ("slapped by rejections from ignorant hacks", as he said), retired from the army. He left the United States in 1913 and went to Belgium, where he established the Armes Automatique Lewis company in Liège to facilitate commercial production of the gun. Lewis had been working closely with British arms manufacturer The Birmingham Small Arms Company Limited (BSA) in an effort to overcome some of the production difficulties of the weapon. The Belgians bought a small number of Lewises in 1913, using the .303 British round and, in 1914, BSA purchased a licence to manufacture the Lewis machine gun in England, which resulted in Col. Lewis receiving significant royalty payments and becoming very wealthy. Lewis and his factory moved to England before 1914, away from possible seizure in the event of a German invasion. The Belgian army acquired only a handful of his guns. They were not on general issue in the Belgian Army, and were used only in a few forays by motor vehicles, south of Antwerp, against the flank of the invading German Army.


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Wikipedia

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