Machine Gun is a fully automatic belt-fed firearm designed for continuous automatic fire. In real life they are used for laying down suppressive fire; destroying enemy infantry and vehicles and preventing them from advancing forward.
Machine guns are the heaviest weaponry available in CF: Legends. Generally speaking, they have the highest recoil, ammunition count and heaviest weight out of all kinds of weapons. Their damage dealing varies slightly from each others, but their accuracy stays pretty much the same.
Pros & Cons[]
Most MGs are rather heavy, therefore, slowing down the movement speed when holding them. Luckily, there are lightweight machine guns available. Their recoil are extremely high while holding down the trigger; trying to control them might be slightly difficult, but with practice it is definitely possible. When some machine guns have quite predictable recoil, such as the RPK, holding the trigger down too long will cause most machine guns to shake wildly and have extremely scattered and randomized recoil. On the other hand, they usually deal massive damage.
Their accuracy can be quite precise in close to medium range combat and reload won't be an option often with its large ammunition capacity. However, reloading most machine guns (as well as their draw speed sometimes) takes quite some times, which may end up get its user killed as their opponent can easily use this opportunity to strike.