What are the sustained rates of fire for the M249?

The sustained rates of fire for the M249, a light machine gun commonly used in infantry units, are designed to provide effective fire while managing heat buildup and maintaining accuracy over extended periods. The correct choice states that the M249 has a sustained rate of fire of 50 rounds per minute, typically achieved in 3-5 round bursts. This method allows the gunner to maintain better control of the weapon and prevent overheating, ensuring consistent performance and effectiveness during combat situations.

Sustained fire is crucial in a tactical environment as it balances the need for continuous fire with the reality of the weapon's operational limits. When employed correctly, the 3-5 round bursts help maintain accuracy and prevent the weapon from jamming or suffering mechanical failures that could occur with higher rates of fire.

Understanding the rates of fire is essential for effective machine gun employment, as it influences the planning and execution of fire support in infantry operations.