I just tried Frog Lube and so far it is the best thing I have ever used. It is available at many gun shops, in fact my local gun store says that it is the only thing that it uses on guns in it's shop. You can check it out on froglube.com and you can also use it's dealer locator to help see where it is sold. As far as heating your gun before application, it takes only a couple of minutes to use a hair dryer to heat the gun. If you're cleaning your guns during daylight hours, place it in the sun for a few minutes to warm it up. The only disadvantage I've seen so far is that once you apply it, you must let it set for about 20 minutes or so before wiping the excess off.