1 Step BIO Mil-Spec CLP is a bio formula highly penetrating fluid specifically designed to clean, lubricate and protect your firearms and weapon systems. Based on synthetic oil and containing anti-corrosion and anti-wear additives, it has been formulated to keep small and large caliber weapons combat-ready in the harshest of environments (desert, snow, tropical, saline, etc.). 1 Step Bio Mil-Spec CLP is virtually odorless. It facilitates the effective removal of firing residues, gums and other contaminants from weapon components and is compatible with all metals and alloys used in weapons.