Breakthrough clean technologies suppressor cleaner is a water-based, ammonia-free cleaner that uses a proprietary blend of detergents and surfactants to remove heavy carbon, lead copper build-up from your suppressor, muzzle brake, compensator, and flash hider.* for best results, soak suppressor in cleaner for 8-24 hours.Size: 1 GallonMaterial: Water-BasedEco Friendly: Ammonia Free