After almost 30 years of success with their famous MC#7 Firearms Bore Cleaner, Shooters Choice wanted to provide their loyal fans with a convenient aerosol version of the top seller. Not only is MC#7 in an aerosol can, it has been formulated with an enhanced combination of cleaners to work faster and better than the original version of MC#7 and it's ammonia free. Due to this exciting product introduction, we will no longer be manufacturing the Xtreme Clean Bore Cleaner (Item # XT012). They strongly believe that the loyal users of MC#7 and Xtreme Clean will be eager to try the MC#7 Extra Strength Bore Cleaner (Item # MC7XT). If people like the MC#7 or Xtreme Clean, they ll love MC#7 Extra Strength Bore Cleaner.