Which operation is NOT part of the 240 cycle of operations?

The operation that is not part of the 240 cycle of operations is aiming. The 240 machine gun operates through a specific sequence of mechanical processes, which includes feeding, chambering, firing, and ejecting. These functions are essential for the weapon's operation and are part of the physical cycle that occurs when the machine gun is fired and reloaded.

Aiming, on the other hand, is a separate action that involves the operator's external skill to align the weapon's sights with the intended target. It does not pertain to the mechanical functions of the 240's firing and cycling process. While aiming is crucial for accurate shooting, it is not included in the defined cycle of operations for the machine gun itself. Thus, understanding this distinction helps clarify the mechanical functions that enable the 240 to operate effectively versus the shooter’s role in targeting.