Which step in the cycle of operations occurs after firing?

The correct answer is unlocking. In the cycle of operations for firearms, once a shot has been fired, the unlocking step is crucial as it facilitates the transition from the firing phase to the subsequent phases of operation. This process involves disengaging the locking mechanism, which secures the bolt in place during firing.

By unlocking the bolt, it allows for the movement of the bolt carrier group (or equivalent mechanism) to begin its rearward motion in preparation for the next steps, which typically include extraction and ejection of the spent cartridge. The unlocking must happen immediately after firing to ensure that the firearm can continue to operate smoothly.

Cooling, ejection, and extraction occur after unlocking as part of the post-firing process, but they hinge on the unlocking step being completed first. This sequence is vital to ensure that the firearm functions correctly, enabling it to chamber a new round and be ready for the next shot.