Which weapon has a maximum range of 3600 meters?

The M16A2 service rifle is designed for accurate engagement of targets at considerable distances, making it effective in combat scenarios. It has a maximum range of approximately 3600 meters, showcasing its effectiveness as a versatile infantry weapon. This range allows a trained shooter to engage at long distances, utilizing its rifled barrel and the stability of a selectable semi-automatic or fully automatic firing mode.

Comparatively, the other weapons listed are designed for different roles and have shorter effective ranges. The M9 service pistol and Glock 17 are handguns typically used for close-quarters engagements, while the M2 .50 caliber machine gun, although capable of long-range fire due to its heavy caliber, has a maximum effective range that is distinct from standard infantry rifles and is focused more on suppressive fire. Thus, the M16A2 service rifle rightly stands out for its combination of range, accuracy, and adaptability in various combat situations.