What is the use of tracers in ammunition?

Tracers are a type of ammunition specifically designed to provide visual guidance for shooters by illuminating the projectile's trajectory. They contain a small pyrotechnic charge that ignites when fired, resulting in a bright trail of light following the round. This visual reference is particularly useful in low-light conditions, allowing gunners to see their aim and make adjustments in real-time based on the path of the projectile.

This feature is crucial in various combat scenarios, enabling more effective engagement of targets. The visibility of the tracer can also assist in coordinating fire among multiple shooters, as they can observe the trajectory and placement of rounds in flight, facilitating better situational awareness.

The other functions suggested, like increasing the weight of the projectile or enhancing its explosive capability, don't apply to tracers. These rounds are designed primarily for visual guidance rather than altering the fundamental characteristics of the projectile. Likewise, while speed can be a factor in certain assessments, tracers do not serve the direct purpose of measuring velocity.