Otis Technology O12-C Carbon Remover (8-Ounce) Keep your firearm in peak condition To clear out the carbon buildup that can cause jams and affect the accuracy of your firearm Biodegradable formula quickly and effectively removes carbon fouling Cleans Modern Sporting Rifles/ARs with ease Removes stubborn carbon fouling with ease Safe on all gun metals Safe for the environment  biodegradable ammonia free