The Mossberg 500 is uniquely issued to the US ArmyAssault kit on certain maps. It features a 6 round capacity. It has high power, a low rate of fire, low accuracy and a short range. Performance wise, it is the ultimate close quarters weapon in the game. Usually, it can effectively kill targets from 20 meters away with only 2 or 3 shots. In anywhere within 10 meters, it is highly capable of killing in a single shot, and its low accuracy can still somewhat help with hip fire. Its main disadvantage is its low rate of fire due to the pump-action function, and the lack of range.
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.