MC-7 Extra Strength Bore Cleaner is a convenient aerosol version of our top seller, MC-7! MC7XT has been formulated with an enhanced combination of cleaners to work faster than the original version of MC-7— and it’s ammonia free!12oz aerosol canQuickly removes copper, lead, carbon and powder foulingCleans bores, receiver and trigger groupsAmmonia FreeSafe, quick and easyNon-abrasive – harmless to the bore surface