SharpShoot-R Wipe-Out Brushless Foaming Bore Cleaner is one of the best ways to clean your rifle barrel. Fill the bore with the foam and allow it to soak overnight. Patch out the barrel and the barrel will be clean. Removes *Carbon *Copper *Brass *Bronze *Powder (Black and Smokeless) *NO AMMONIA This cleaner has a light to almost odorless smell. It is safe for all rifle barrels. It is NOT SAFE for Varnish, shellac, or old oil type finishes.