The professional-grade, long-standing preferred choice for "after-bluing" is a one-step oil and protection treatment. This specially formulated product features oil molecules that displace water molecules remaining on the gun's surface after the final hot water rinse. It provides a fully protected surface, ensuring that your efforts in polishing and bluing are not compromised by rust beneath the oil. Additionally, it serves as an excellent rust preventive, neutralizing fingerprints, body acids and oils from handling and shooting. It offers a protective film with the desired "oiled and protected" feel favored by many serious shooters and firearm enthusiasts. This product sets the standard by which other "after-bluing" oils are evaluated.