What type of ammunition should primarily be used with the M9 pistol?

The M9 pistol is designed to be used primarily with the A363 M882 Ball ammunition. This type of ammunition is a full metal jacket (FMJ) cartridge, which is specifically intended for military applications. The A363 M882 is effective for training and combat due to its ability to ensure reliable feeding and extraction in the M9's action, making it suitable for both target practice and operational use.

Using ball ammunition like the A363 in the M9 allows for consistent performance, which is essential for developing accurate shooting skills and ensuring combat readiness. Moreover, the military often prefers ball ammunition for its balanced characteristics, which offer a combination of penetration and accuracy.

Other types of ammunition listed, such as dummy rounds or hollow points, serve specific purposes but are not the primary choice for standard training or operational use with the M9.