Which characteristic best describes M249?

The M249, widely known as the Squad Automatic Weapon (SAW), is best described as lightweight and air-cooled. This characteristic is essential for its role on the battlefield, as the lightweight design allows for easier maneuverability and portability for soldiers, especially in dynamic combat scenarios where flexibility is crucial. The air-cooled system is significant because it helps dissipate heat during sustained fire, reducing the risk of overheating and allowing for continued operation in prolonged engagements.

The lightweight nature is contrasted with heavier machine guns that have a more cumbersome design, which can hinder mobility. Additionally, the air-cooled feature differentiates it from water-cooled weapons, which are generally bulkier and require more logistical support. Understanding these features is important for recognizing the M249's capabilities and advantages within squad-level operations.