What is the sustained rate of fire for the M249 SAW?

The sustained rate of fire for the M249 SAW is defined as the rate at which the weapon can be fired continuously while maintaining accuracy and managing heat buildup over time. The correct answer indicates a sustained rate of 50 rounds per minute (RPM), with the recommendation of firing in 3-5 round bursts. This approach allows the barrel to cool sufficiently between bursts, preventing overheating, which can lead to malfunctions or degraded performance.

With a sustained rate of 50 RPM, the M249 can support infantry units effectively in a variety of combat situations without risking damage to the weapon or compromising accuracy. The smaller burst size of 3-5 rounds also helps ensure each shot is controlled and aimed, contributing to overall mission effectiveness.

In contrast to the other options, which indicate higher RPMs or different burst sizes, they may refer to rapid or cyclic firing rates rather than what is considered "sustained." These rates can lead to quicker overheating and decreased accuracy, making them unsuitable for prolonged engagements.