Brownells has reintroduced the renowned 44/40 cold-blue formula, a long-standing benchmark in the industry, to the delight of its many enthusiasts. This high-speed formula is incredibly effective, requiring only a simple application process - moisten a patch with 44/40, apply it to the metal and immediately remove it with a dry patch. The bluing action is instantaneous, deeply penetrating the metal for a durable finish without the need for extended soaking or rubbing. Surface preparation is straightforward; for scratches, clean and degrease as usual before applying 44/40. Whether bluing external or internal parts, the process remains simple - achieve the desired surface finish, clean it and use the wipe-on, wipe-off method. 44/40 excels in performance and versatility, making it an excellent alternative to traditional layout fluids due to its rapid action and dark color. It quickly darkens steel, enhancing layout line visibility without causing surface buildup that could interfere with dimension readings and it does not peel or flake. Additionally, it is useful for coating lathe and cutting tools before sharpening to clearly see grinding areas and it can age brass and copper in restorations or reduce glare and reflection. With 44/40, you can accomplish a wide range of tasks, making it an essential addition to your workbench. Its highly active formulation allows for expert touch-ups on nearly any non-stainless gun steel, seamlessly blending repairs with the original finish.

Report incorrect product description

Reviews

Q & A

Retail Stock

Compliance

Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).