FIRST! MAKE SURE THE FIREARM IS COMPLETELY UNLOADED!
NO SHELL IN THE CHAMBER. NO SHELL IN MAGAZINE!
And don't forget the first rule of safety.
To Keep the Muzzle pointed in a safe direction,
And to treat each gun as if it is loaded.
And when you finish cleaning your gun,
Don't forget to burp it lol ( Kidding about this one )