GUNK-OUT quickly evaporate and blasts away caked-on oil contaminated dirt, dust, and powder residues. Solves most malfunction problems. KleenBore's GUNK-OUT makes cleaning modern firearms easier and faster. Cleans fast and will not harm plastic, wood, laminates, composites, rubber grips, or any other material including camo finishes. Use Oil after use of GUNK-OUT on all metal surfaces and metal to metal contact points, as GUNK-OUT removes all oil/grease from metal surface.