The Vickers K is a British aircraft-mounted machine gun developed in the 1930s. It was designed to be lightweight and effective, primarily used in military aircraft during World War II. The gun fires .303 British ammunition and is known for its high rate of fire, making it suitable for aerial combat. This machine gun was commonly installed on various aircraft, including the Bristol Blenheim and Avro Lancaster. Its design allowed for easy operation by pilots and gunners, contributing to its popularity in the Royal Air Force. The Vickers K played a significant role in enhancing the firepower of British aircraft during the war.