LubriSilk "Game Changer" Firearm Performance Lubrication Kit with LubriSilk Firearm Cleaner, Lubricant & Metal Sealer REFILL Cleans, lubricates and protects your firearm Patented, safe to use and biodegradeable Easily removes gun shot and metal residue Seals metals with an acid proof coating 85% as hard as diamonds Can help to raise muzzle velocity and reduce FTFs & FTEs