RCBS 87059: Designed for use with the RCBS Ultrasonic Case Cleaner, Ultrasonic Weapons Cleaning Solution quickly removes grease, carbon buildup and fouling from firearm parts. The fast-acting synthetic detergent cleans all part surfaces, and its rust preventive helps stop corrosion. Ultrasonic Weapons Cleaning Solution is easy to use, and its formulation is non-corrosive and non-combustible.