Brownells After-Bluing Water Displacing Oil Rust Preventative,5 Gallon

If you're serious about bluing work, the Brownells After-Bluing Water Displacing Oil is the rust preventative that belongs in your shop. This 5-gallon jug holds the same professional-grade formula that gunsmiths and restoration specialists have relied on for decades—a water-displacing oil specifically engineered to protect freshly blued steel the moment it leaves the hot water rinse. Unlike standard gun oils, the molecular structure of this formula actively pushes water off the gun's surface, preventing the rust blooms that can wreck hours of polishing and bluing work.

The real advantage here is timing. You're protecting a freshly processed surface when it's most vulnerable, and you're doing it in one step. The oil film that results has the feel serious shooters and gunsmiths prefer—not slippery or gummy, just properly protected. It also neutralizes fingerprints and body acids from handling and shooting, reducing one more source of corrosion. Whether you're finishing a full restoration, touching up a repair, or maintaining a collection of blued firearms, this is the standard that other after-bluing oils are measured against.

The 5-gallon size makes sense for a serious gunsmith shop, restoration bench, or dedicated shooter who goes through preventative maintenance regularly. One application goes a long way, and you're not constantly reordering small bottles. Keep it on hand for every bluing job—it's the final step that keeps your work from rusting before it leaves the bench.

Key Features

• Water-displacing formula pushes moisture off freshly blued surfaces
• One-step protection applied immediately after hot water rinse
• Neutralizes fingerprints and body oils from handling
• Provides protective film with professional feel preferred by gunsmiths
• 5-gallon bulk size for shop and regular use

Specifications

Frequently Asked Questions

When do I apply after-bluing oil?

This oil is designed to be applied immediately after the final hot water rinse in the bluing process, while the gun is still warm and wet. The water-displacing formula protects the freshly blued surface before it has a chance to rust.

Can I use this as a regular gun oil for storage and maintenance?

While this formula works as a rust preventative, it's specifically engineered for the after-bluing step when bluing work is fresh. For general gun maintenance and long-term storage, standard gun oils are more typical, though this product can certainly serve that role.

Why choose a water-displacing oil instead of a standard rust preventative?

The molecular structure of this Brownells formula actively displaces water molecules from the gun's surface, making it ideal for the moment right after bluing when the steel is still wet. It prevents the rust blooms that can ruin hours of polishing and bluing work.

Is the 5-gallon size right for home use?

The 5-gallon jug is sized for gunsmiths, restoration shops, and serious shooters who do regular bluing work or maintain collections. If you're doing occasional touch-ups, a smaller bottle might be more practical, but if you're running a shop or regularly restore firearms, this bulk size offers better value.