RIMFIRE Bore Cleaner is specially formulated to remove a wide range of bore fouling residues and particles associated with using rimfire. RIMFIRE Bore Cleaner utilizes a technologically advanced formulation made especially to not only keep users happy, but also the environment they are in. RIMFIRE Bore Cleaner is barrel safe and contains no harmful chemicals that might harm your equipment or the environment. Less hazardous chemicals with limited odour and toxicity...."BRING FORTH THE MARKSMAN in you"