Now this is what I use on all of my guns to seriously clean them when I first buy them from someone else, or if I buy a gun covered in cosmoline. This stuff goes by many names Gunsmith punch, Col. Hatchers drink, dam good sh*t, ATF cocktail, regardless of what it is called it will pretty much cut through any type of grease or other debris. Here's the recipe: 1. ATF Dexron 3 2. Kerosene 3. Turpentine 4. Acetone Now all you have to do is mix them in equal part in the order given, and behold the best gun cleaner ever in my opinion.