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A Machine Gun (commonly abbreviated MG) is a fully automatic mounted or portable firearm, usually designed to fire rounds in quick succession from an ammunition belt or magazine, typically at a rate of several hundred rounds per minute. Machine guns are generally categorized as "light", "medium", or "heavy", and have been featured in every game in the Battlefield series to date.
A light machine gun (LMG) is a machine gun designed to be employed by an individual soldier, with or without an assistant, as an infantry support weapon. They are the most common machine gun in the Battlefield series.
LMGs typically have much larger ammo capacity, especially when belt-fed. This allows for long periods of sustained fire, which may be counterbalanced by requiring the weapon to cool down after overheating.
LMGs gain increased accuracy when the player crouches or prones, sacrificing mobility for control. A well-placed machine gun can effectively control squads of enemy, making them invaluable in the defensive role. In games featuring the bipod as a usable weapon accessory, accuracy and stability are greatly increased, exceeding that of other automatic weapon classes. In some games, gain more accuracy during sustained fire.
LMGs suffer from lower than average accuracy compared to carbines and assault rifles when fired while standing. Also, recoil is generally higher compared to their assault rifle derivatives, with extreme rates of fire also lower. Belt-fed machine guns suffer from the longest reload times of any weapon, as well as the highest hipfire spread, making them highly disadvantaged in close quarters scenarios.
A Heavy Machine Gun (HMG) refers to its superior power, range, and weight over other machine guns. They must be deployed on the field (with a nest often built around it) or mounted to a pedestal or carrier vehicle. Coaxial mounted weapons are aimed by use of the main gun control. Some are light enough to be carried by infantry, but typically not in a usable state.