Shooters Choice MC#7 Extra Strength Bore Cleaner (Item #MC7XT) is a convenient aerosol version of our top seller MC#7. MC7XT 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! Convenient Aerosol Can with Extension Tube. Quick and easy to apply. Stronger MC#7 Formula - more power and easier cleaning. Prolongs barrel life. Maintains accuracy in new firearms. Restores accuracy in old firearms. Removes all types of fouling; Copper fouling Lead fouling Powder fouling Carbon fouling Plastic Shotgun Wad fouling Black Powder fouling Plastic Sabot Ammo Residue and Pyrodex fouling. Non-abrasive - harmless to the bore surface. Removes corrosive ammo residue.