Creates a powerful system when combined with Hoppe’s Elite Gun Cleaner. The gun cleaner removes the carbon which typically slows the copper etching process. The Copper Terminator etches faster than standard ammonia-based products, which allows the gun cleaner (used intermittently in the process) to penetrate under the copper and remove it even faster.Works up to 4 times faster than standard copper removal systems. Is ammonia free and virtually odorless.Is non-hazardous, non-flammable and can be shipped overnight.Is completely safe on bore steel. Does not leave ammonia-type crystals after use that can attract water from the air, expand and cause corrosion and/or microscopic stress fractures.System conditions the bore so copper does not build up as quickly.