Why is it important to remove oil and moisture before using a firearm?

Removing oil and moisture before using a firearm is vital primarily to avoid jamming or bursting. Both oil and moisture can interfere with the mechanical functions of a firearm, potentially leading to malfunctions. If oil is present, it can attract dust and debris, which may build up in mechanical parts and cause jamming during operation. Furthermore, if moisture enters the chamber, it can lead to dangerous conditions such as misfires or even catastrophic failures, like a burst barrel, particularly if the ammunition is hindered by moisture.

Ensuring that the firearm is dry and free of excess oil enhances its reliability, allowing for smooth cycling of action and effective operation during use. This safety precaution is crucial for both preventing injury and ensuring that the firearm operates as intended when needed.