The Hoppe's all new state-of-the-art Gun Medic line of products were developed to resuscitate the dirtiest firearms from malfunctions caused by build-up of gun powder, lubricant and grime. When seconds count to get you back in action, the unrivaled Gun Medic "All-in-One" formula cleans the actions of firearms and leaves behind a thin layer of high performance lubrication, protecting against the most punishing corrosion. Recommended to use Gun Medic Cleaner before application Highly concentrated, just a little is all you need Cold/Heat resistant -65deg F to 500degF Bio-Bases formula