How often should firearms be subjected to maintenance checks?

The correct approach to firearm maintenance involves conducting checks at regular intervals as outlined in the maintenance manual. This regular maintenance is crucial for ensuring that firearms operate safely and efficiently over time. It helps to identify potential issues before they develop into malfunctions, thereby enhancing the reliability of the weapon.

By adhering to a consistent maintenance schedule established in the manufacturer's guidelines, users can maintain optimal performance and longevity of the firearm. This practice is standard in military and tactical operations, as it ensures that weapons are always in a condition suitable for use.

The other options fail to recognize the importance of proactive maintenance. Only checking firearms when they malfunction neglects preventative care, potentially leading to unsafe or ineffective equipment. Random intervals do not provide an effective strategy for maintaining equipment reliability. Lastly, performing maintenance only before competitions or evaluations does not account for the ongoing wear and tear that occurs during regular use, putting the operator at risk during critical moments.