Birchwood Casey 33240 Hopper Spit Rust Protection 11 Oz Aerosol

Birchwood Casey's Hopper Spit rust protection is an 11 oz aerosol designed to shield your firearms from corrosion during storage and between shooting sessions. Whether you're laying up a rifle for the off-season, protecting a safe queen through humid months, or safeguarding precision metalwork on a long-term collection, this protective coating creates a barrier against rust and oxidation on both ferrous and non-ferrous metals—the materials that make up your gun's action, barrel, and internal components.

Storage conditions vary wildly across the country: coastal salt air, humid basements, climate-controlled safes, and everything in between. Hopper Spit is formulated to stand up to harsh environmental exposure, outperforming competitor products in lab salt-spray testing—a rigorous simulation of real-world corrosion that matters if you're serious about long-term metal preservation. The aerosol format makes application fast and even across hard-to-reach surfaces inside actions and under handguards.

This isn't a cleaning solvent or a running oil for moving parts; it's a dedicated corrosion preventative for storage and protection. Keep a can on hand for pre-storage prep, seasonal transitions, or whenever you want an extra layer of defense against rust on your firearms collection.

Key Features

• Aerosol application for even, controlled coverage on all metal surfaces
• Formulated to protect both ferrous and non-ferrous metals
• Designed specifically for long-term storage and corrosion prevention
• Lab-tested durability against salt-spray corrosion
• 11 oz container size

Specifications

Frequently Asked Questions

Can I use Hopper Spit on all parts of my rifle?

Hopper Spit is designed for metal surfaces. It works on ferrous metals (steel barrels, actions) and non-ferrous metals (aluminum receivers, brass fittings) commonly found on firearms. Avoid spraying into trigger mechanisms or other areas where you need full mechanical function.

Is this the right product for general gun maintenance, or just storage?

Hopper Spit is a corrosion preventative formulated for storage and protection during periods of non-use. It is not designed as a general-purpose gun oil or cleaning solvent for regular maintenance and shooting.

How does Hopper Spit compare to other rust preventatives?

In laboratory salt-spray testing, Hopper Spit significantly outlasted competing products in simulating harsh environmental corrosion—making it a proven choice for protecting firearms during long-term storage and in challenging climates.

What size is the Birchwood Casey 33240 container?

This product comes in an 11 oz aerosol can.