Which of the following is not part of the cycle of loading a firearm?

The option that is not part of the cycle of loading a firearm is targeting. The cycle of loading typically involves a series of mechanical actions that prepare a firearm to fire. These actions include unlocking, ejection, feeding, chambering, and locking of the firearm. Targeting, however, is a process that occurs after the firearm has been loaded and is ready to fire; it involves aiming the firearm at a target, rather than any mechanical function of the firearm itself.

When understanding the cycle of loading, it is crucial to recognize that it includes all the steps necessary to prepare the firearm for discharge, which targeting does not encompass. Therefore, targeting is distinct from the mechanical processes involved in loading a firearm.