The MAT-49 is a French 9x19mm Parabellum submachine gun designed by Manufacture Nationale D'Armes de Tulle in 1949. It was designed to be cheap so it could be manufactured in large numbers and effectively be standard issue to French forces to replace the MAS-38. It was used during the First Indochina War between France and the Viet Minh and, following the Viet Minh victory, many MAT-49s were captured and converted to fit 7.62x25mm Tokarev rounds, then available in large numbers from the Soviet Union and China. It was eventually replaced by the FAMAS in French forces in 1979.
In Battlefield Vietnam, the MAT-49 is issued to NVA and Viet CongEngineer kits, and is the only submachine gun in the game. It features a 32-round magazine, a medium rate of fire, low damage, low accuracy and medium recoil. The MAT-49 is essentially a close quarters weapon, as its recoil can be quite overwhelming and its accuracy degrades quickly. For the amount of damage, its average rate of fire can be a great weapon in close quarters and with good aim medium range, while accuracy is dependent on the player, maps with urban evironment can make a great force multiplier in some cases. The MAT-49 is also has an on par reload time with the assault rifles.
Because Battlefield Vietnam features different loadouts for each faction, this list may not be specific enough. Please see each faction's respective page for information on individual weapon kits and loadouts.