The BREN light machine gun is a gas-operated, air-cooled, magazine-fed light machine gun that was used by the British and Commonwealth forces during World War II. It was designed in Czechoslovakia and produced in the UK. The BREN was an effective and reliable weapon, and it saw service in many theatres of war. It was also used by other countries, including Canada, Australia, New Zealand, and India. The BREN was a reliable and accurate weapon, and it was used extensively by the British and Commonwealth forces during World War II.