Which feature of the M2 Browning allows it to fire continuously?

The M2 Browning machine gun utilizes recoil operation as its primary feature that allows it to fire continuously. In this system, the energy generated from the recoil of the weapon, following each shot, is harnessed to cycle the action. When a round is fired, the rearward movement of the bolt due to the recoil compresses a spring, which then propels the bolt forward to chamber the next round. This process occurs rapidly and allows for sustained, automatic fire as long as the trigger is held down and ammunition is available.

While other mechanisms, such as gas systems, can also operate automatic firearms, the M2 specifically relies on recoil operation. It’s important to note that the M2 Browning's design allows it to maintain a high rate of fire while managing significant heat and wear that arises from rapid firing. This is essential for its effectiveness in various combat situations where sustained firepower is necessary.