The Foaming Bore Cleaner simplifies firearm maintenance by utilizing expanding foam technology to thoroughly clean your bore. By spraying the cleaner into the breech end, the foam expands to fill the entire bore, ensuring comprehensive coverage. Once applied, allow the foam to sit until it breaks down, effectively loosening debris and residue. After the foam has settled, use your preferred cleaning kit to remove the remnants, leaving your firearm clean and ready for use. The bore is thoroughly cleaned with ease using expanding foam Spray directly into the breech to fill the bore, then allow the foam to take effect Utilize your preferred cleaning kit for maintenance Foaming bore cleaner, 3 oz