Designed by well known bench rest competitor Butch Fisher, this product is a must for serious shooters who are tired of packing around numerous cans, bottles and brushes in order to clean firearms. Since its introduction to the market in 1999, this product has received nothing but high praise from competitive shooting circles across the country. This non-abrasive solvent removes all forms of fouling, including copper. Sizes: 4 oz. or 16 oz.