Sorry to hijack this thread but have to chime in about WD 40. I had an uncle that bought a brand new S&W revolver. I doubt it had ever fired more than a cylinder’s worth of cartridges while he had it. Monthly, and religiously, he’d spray the pistol down with WD 40. Not sure how long he had the gun, but it was passed on to his son. It was so gummed up from years of the stuff it was difficult to cock the hammer or pull the trigger through for double action shooting. A cleaning made it right.