In machine gunnery, what does the term 'sustained fire' refer to?

The term 'sustained fire' in machine gunnery specifically refers to the practice of firing at a controlled rate for an extended period. This approach is vital for maintaining the effectiveness of the weapon while also preserving barrel integrity and minimizing ammunition wastage. Sustained fire allows for a consistent engagement of targets without overheating the weapon or compromising accuracy.

This method contrasts with a high volume of fire delivered in a short time, which can lead to overheating and increased risk of malfunction. Sustained fire focuses on a balance between maintaining a presence on the battlefield and ensuring operational reliability.