What type of ammunition is used for observation of fire and training with the M240?

The use of M62 Tracer ammunition for the observation of fire and training with the M240 is significant because tracer rounds are designed to provide visible trajectories. This characteristic is crucial when training, as it allows shooters and observers to visually track the path of the round through the air, helping them to adjust aim, correct firing solutions, and improve overall marksmanship accuracy.

Tracers are typically equipped with a pyrotechnic composition that ignites upon firing, producing a visible trail of light which can be seen easily in daylight and low-light conditions. This feature not only aids in understanding the effects of aim and adjustments during training but also helps in coordinating fire with other units in a tactical scenario.

While M60 Ball, M80 Ball, and M855 Green Tip are types of ammunition that serve different purposes—such as standard ball ammunition for general use or armor-piercing rounds—none of these provide the visual feedback necessary for effective fire observation and training like the M62 Tracer does. This makes the M62 Tracer the appropriate choice for these specific training requirements.