Browning Carbon Remover – Step 1 – 124023 Quickly remove powder fouling and carbon build-up. The first step to accuracy. Browning’s Step 1 Carbon Remover is not only effective, but it provides a starting level of cleaning that ultimately brings out your rifle barrel’s best potential accuracy. It starts with a proprietary formula that quickly removes carbon build-up. Evaporates quicklyContains no ammonia, pH neutralPinpoint applicator4 oz. bottle