Which of the following is NOT part of the safety checks before firing a weapon?

Adjusting the firing position is not considered a safety check before firing a weapon, as this action pertains more to the preparation for firing rather than ensuring safety measures are in place. Safety checks focus on confirming that everything is set correctly to fire safely and effectively. This includes verifying the type of ammunition to guarantee compatibility with the weapon, confirming crew readiness to ensure that all personnel are prepared and aware of their responsibilities, and checking the area for hazards to prevent accidents or injuries during firing.

In contrast, adjusting the firing position typically happens as part of the operational procedures once safety checks have been completed, rather than being a precautionary measure aimed at ensuring safety. Effective safety protocols must be adhered to before any adjustments to firing position take place, which is why this specific action is not included in the critical safety checks.