However, grease is nearly always a better option when it comes to protection. It stays on your firearm considerably longer than oil would have because it is much thicker. Guns should always have a protective coating on their metal parts since even brief exposure to bare, untreated metal can start rusting. The debate over the best
gun lubricant—oil vs. grease—is one of the most frequent ones in the firearms community. Gun lubrication shouldn't be disregarded because it's essential for ensuring that your handgun operates effectively and for protection against wear and corrosion. Using grease or oil has certain distinct advantages and disadvantages. Different components can be used to make both grease and oil. Since not all gun lubricants are created equally, it ultimately comes down to preference. It's important to take the time to research the differences because different compositions might be more effective for you.