Breakthrough Clean Carbon Pro Heavy Carbon Remover with Bore Cleaner is a water-based, ammonia-free cleaner capable of removing lead deposits and heavy carbon fouling. Carbon Pro neutralizes corrosive residues preventing rust without etching or harming the barrel's surface. Carbon Pro is safe and effective for removing carbon buildup and bring your barrel back to a clean start. Water based Ammonia free Removes lead deposits and carbon fouling Restores your barrel to a clean surface