+3 on Mr. Berg's WD-40 synopsis. I'm not sure what the anti-WD-40 movement is all about. It works well as a short-term rust preventative and water displacer, and it cleans most types of grime fairly well. I think people try to use it as a lubricant, a purpose for which it does not do well. It will lube for a short time, until the solvent evaporates. If you are at the range and need something to get your 1911 running, use it if you have no lube available (of course, the oil or tranny fluid from your dipstick will work better). It is a jack of all trades and a master of none, with its greatest strength being its ubiquity. I don’t use it on my guns unless the go in the drink or I have nothing else available, but I’m certainly not afraid of it.