Which FM serves as a reference for the M9 service pistol?

The correct choice, which serves as a reference for the M9 service pistol, is FM 3-23.35. This field manual specifically addresses the M9 pistol, including its operation, maintenance, and employment in various tactical scenarios. It provides soldiers with essential information and guidance for effectively using the weapon, ensuring they understand its capabilities and limitations.

Understanding the specific field manual dedicated to the M9 is crucial for soldiers who are expected to be proficient with this weapon, particularly in combat situations where procedural accuracy and weapon handling can significantly impact mission success. This reference supports both individual training and unit-level instruction, enhancing overall weapon readiness.

The other field manuals listed do not focus specifically on the M9 service pistol, with some covering broader topics like physical fitness, land navigation, or different types of weapons systems. Therefore, FM 3-23.35 is the appropriate source for training and guidance concerning the M9.