Cleaning your firearm just got a whole lot easier and faster thanks to Birchwood Casey's Gun Scrubber Firearm Cleaner. Gun Scrubber Firearm Cleaner is a pressurized and fast evaporating. This is a firearm cleaner that cleans internal metal, firearm parts, and firearms effectively. While safe for firearm usage, this solvent may harm finished surfaces, plastics, laminates, composites, rubber grips, or other materials used in the construction of todays firearms.