KG-1 Carbon Remover Step™ 1 A military group, to remove carbon buildup from their weapons, initially used KG-1 under an exclusive use. It was formulated for them. KG- 1 will literally melt carbon and is the first step in the cleaning process. It is ideal for black powder rifles. KG sells this product to other manufacturers who bottle it under a different label. It is also recommended for use by several barrel makers.