Marzio,
Try WD-40. Just spray it through the bore until it runs clear, run a patch, repeat. You may wish to let it soak overnight. It will not harm the finish and is wonderful for removing carbon build up, grit and grime. It is a trick I learned for quick cleanup/lube of HK weapons. It is a dust magnet however, and afterwords I run break free or rem-oil over everything to remove the residue.
as an aside...
A few years ago I tried a bore snake. I've been using them ever since. They are wonderful for everything except the most stubborn copper fowling and I use them in my pistols and long guns.
Glen
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"There are three reasons to own a gun: To protect yourself and your family, to hunt dangerous and delicious animals, and to keep the King of England out of your face." รข?? Krusty the Clown
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