In the function check for semi mode, what must be done after pulling the trigger?

In the context of checking for semi mode after pulling the trigger, pulling the charging handle three times is an essential step to ensure that the weapon is clear and functions correctly. This action helps to cycle the firearm's action, ejecting any rounds that may be in the chamber and allowing for a thorough inspection of the chamber for safety.

This procedure is critical to confirming that the weapon is in a safe and proper operating condition before further handling or reloading. Proper handling and verification of the weapon's status are fundamental principles of firearm safety. Therefore, pulling the charging handle three times not only checks the function of the mechanism but also enhances the safety of the operation.

The other actions, while part of firearm safety and handling, do not specifically relate to the function of checking for semi mode directly after the trigger pull as succinctly as this sequence does.