Pro-Shot Universal Gun Cleaning Kit - 3 Piece .22 Cal. and Up Stainless Steel 36 in Length. Copper Solvent Superior Next Generation FormulaPro-Shot's Copper Solvent IV is excellent for Copper Powder and Primer Fouling while providing rust protection for your barrel. Designed Specifically for Copper (Jacketed Bullet) Fouling. How it works FAST AND EFFECTIVELY to clean your Barrel. Our synthetic formula uses activated positively charged ions that have an affinity for copper and its oxides. They bond and release the copper from the surface of the bore to provide a superior clean surface without copper and powder fouling. It also soaks into the pores of the metal to provide rust and corrosion inhibitor protection. Our NEW innovative formula is a smarter healthier and environmentally safer way to clean than the old brute force method of throwing harsh chemicals at Copper fouling with the Ammonia Solvents. Proprietary additives that remove copper powder and primer fouling Rust and Corrosion Inhibitors. No Offensive Odor. Specifications for Pro-Shot Universal Gun Cleaning Kit - 3 Piece: Manufacturer: Pro-Shot Color: Stainless Steel Projectile Caliber: .22 Caliber .45 Caliber Gauge: 12 Gun Type: Universal Package Contents: Pro-Shot Universal Gun Cleaning Kit - 3 Piece Pro-Shot UV22K36: Universal Gun Cleaning Kit - 3 Piece .22 Cal. and Up Stainless Steel 36 in Length