What should you do before using any firearm?

Before using any firearm, it is essential to ensure that the barrel is clear of any oil or grease, as this could obstruct the projectile and result in a dangerous situation upon firing. Oil or grease can build up inside the barrel, creating excess pressure that may lead to a misfire or even a catastrophic failure of the firearm. Proper maintenance and inspection involve checking that the barrel is clean, dry, and free of obstructions.

While ensuring the barrel is free of oil is crucial, other safety measures are also important in the lifecycle of firearm usage, such as checking for visible damage and ensuring that the firearm is properly maintained, including lubrication where necessary. However, the immediate prerequisite for using a firearm is to confirm that the barrel is clear, as this directly impacts safety during operation. Loading the firearm is not appropriate until all safety checks, including barrel clearance, have been completed.