Which factor is least likely to affect the effective range of a weapon like the RPD?

The effective range of a weapon like the RPD (Ruchnoy Pulemyot Degtyaryov) is influenced by various factors, such as ammunition quality, environmental conditions, and weapon maintenance. Among these, the weight of the operator is least likely to have a direct impact on the weapon's effective range.

Ammunition quality plays a significant role because it affects the projectile's velocity, stability, and accuracy. High-quality ammunition can provide better performance, resulting in a more effective range. Environmental conditions, including wind, temperature, humidity, and altitude, can also alter the trajectory of a bullet and affect how far it can effectively reach. Regular weapon maintenance ensures that the firearm operates optimally, which is crucial for maintaining accuracy and reliability over various distances.

In contrast, the weight of the operator does not fundamentally change the inherent characteristics of the weapon system itself, such as barrel length or caliber, which primarily dictate the effective range. Although an operator's weight might influence their ability to maneuver or carry the weapon comfortably, it does not impact the weapon's ballistic performance.