The Bren is a British light machine gun designed during the 1930s and adopted by the British Army and other Commonwealth forces in 1938, and used extensively during World War II. The Bren was based off the Czech ZB vz.26, and had many similar characteristics, such as the top-mounted magazine and feed systems. During World War II, it was chambered in .303 British, the same as Lee-Enfield rifles, placed in a typically curved 30-round box magazine. It fired at a rate of fire of around 500 rounds per minute, with an effective range of around 550 meters.
The Bren LMG is a weapon featured in Battlefield 1942, introduced in the Secret Weapons of WWII expansion and issued to the Special Air Service Assault. It has a 30 round magazine, decent power and range, and fair accuracy. It uses the same projectile as the M1918 BAR, and so has the same damage, but with a better rate of fire, higher accuracy, and a larger magazine, however, if fired beyond 50 meters, its damage decreases gradually to half damage around 100 meters. When the player is prone, the Bren suffers no accuracy penalty when fired, making it perfect for suppressive fire and maximal accuracy for medium-long range engagements.
— In-game Description