KG-12 was originally developed to clean copper fouling from large bore military weapons and provides professional shooters, gunsmiths, armorers, hunters and other firearm enthusiasts with a product that will remove the toughest copper fouling without damaging the bore. The water-based, ammonia-free formula gently loosens copper buildup and prepares the bore for final cleaning.
Since KG-12 contains no ammonia, there is no need to neutralize it or to remove it quickly after application. KG-12 will remove the toughest copper fouling without harming any other metal, and unlike etching and ammonia-based cleaners, KG-12 will not hurt the metal of the bore. This makes it ideal for precision rifles and firearms that demand careful maintenance without chemical damage or time pressure once applied.
Made in USA by KG Industries, LLC, KG-12 Big Bore Cleaner combines proven military-grade performance with user-friendly chemistry that delivers superior copper removal without the harsh odors or bore-etching risks of traditional solvents.
