CVA's series of Barrel Blaster solvents and rust preventatives are specifically designed for use with black powder firearms. The Barrel Blaster Cleaning System comes with: A 7 ounce can of Citric Based Solvent Spray: Spray on a patch or brush to run through your rifle barrel to remove fouling.6 ounces of Rust Preventative Patches: Critically used as a final pass-through cleaning patch to prevent rust and corrosion. A 7 ounce can of Foaming Bore Cleaner: Spray in your rifle barrel and later swab it clean.6 ounces Quick-Clean Patches: Pre-saturated with solvent for quick, easy barrel cleaning. A 4 ounce jar of Barrel Blaster Parts Soaker: Soak heavily fouled plugs and other small parts. Multiple Dry Cleaning Patches. CVA Barrel Blaster Cleaning System Value Pack AA1850