The SIG MG 50 is a general-purpose machine gun of Swiss origin and was chambered in many calibres.
It was designed to replace the Maxim and Furrer M25 guns in service of pre-World War II design so around 1944/51, SIG industries decided to manufacture a series of gas-operated machine guns fed by using drum magazines and ammo belts.
A version chambered in the .30-06 calibre was adopted by Denmark as the SIG M/51,[1] while another variant was tested in Sweden as the SIG MG 53 but again was turned down.
The MG 50 is an air-cooled, gas-operated weapon and is fed by ammo belt.
The barrel is designed to be interchanged quickly when in field conditions.