Which FM covers the M9 service pistol?

The correct information indicates that the M9 service pistol is covered under FM 3-22.9. This field manual specifically provides comprehensive guidance on the proper handling, maintenance, and operational employment of the M9 pistol, making it the authoritative source for soldiers to refer to regarding this particular weapon system. It includes critical aspects such as safety procedures, firing techniques, and specifications for employment in various scenarios.

FM 3-23.35 is related to the training and employment of other weapons systems, while FM 3-22.27 and FM 3-22.65 cover different aspects of small arms and weapon systems that do not particularly focus on the M9. Thus, understanding the specific coverage of FM 3-22.9 is essential for anyone looking to gain in-depth knowledge about the M9 service pistol.