About Us

FirearmProtector.com is A Division of Harry Miller Corp, an American Custom Chemical Company in business since 1936 and headquartered in Philadelphia, PA. Harry Miller Corp is a manufacturer and distributor of high-quality chemical products for the automobile and aeronautics industries.

The president of Harry Miller Corp, dissatisfied with the quality of the gun cleaning products on the market, challenged the company's chemists to develop something better. The creation of this high quality cleaner/conditioner/protector was a labor of love, between the talented, experienced chemists in our labs and the president of the company who wanted the best quality products on his own firearms. The result was Steelgard Firearm Protector, which he began selling when family and friends tried it and said it was the best all-in-one product they had ever used.

If you would like to try free samples of our 3-in-1 gun care product for your law enforcement or military agency, contact us. (Why free? Because we know that when your team uses Steelgard® once, they will never want another product.) SDS sheets are available upon request.

If you have any questions or comments about our product, if you need assistance when placing an order or checking on an order that you have already placed, please contact us!

A firm supporter of law enforcement, our military and our 2nd Amendment rights, Firearm Protector is made of ingredients sourced in the USA and all our products are proudly made in the USA.

Harry Miller Corp., the inventor and producer of “Steelgard®”, is a family-owned, business-to-business specialty chemical manufacturer located in Philadelphia, PA. The company was founded in 1936 and is ISO 9001:2015 quality certified for research, development, and manufacture of specialty chemical blends for steel, metalworking, electronics & related industries.

“Steelgard®” is a registered trademark of the Harry Miller Corp., which designates a family of rust preventives with a variety of attributes. The specific formula “Steelgard® 1505-B” was developed by the company’s laboratory as an industrial, solvent-based rust preventive for long-term storage of metal parts. Additionally, it was designed to leave a dry film to prevent tackiness while simultaneously providing lubrication where there was metal to metal contact.


Harry Miller Corp knows metal — whether that metal is “blanked” into sheet form, extruded, or “drawn” into parts for an automobile engine or use in the aeronautics industry, or drilled and honed into the barrel of your favorite revolver.

The chemical specialists in our labs have developed the best solution available to resolve every cleaning/protection issue you encounter while maintaining your firearm. The base Steelgard® product has been on the market since 1960, and has proven itself under a myriad of typical and extreme conditions. We have created an easy-to-use spray on formula to offer the best 3-in-1 protection for your firearm investment.

Creating the perfect chemical mixture for your needs is what we have been doing since the 1930s. Technologies change, needs change, but the desire for the best possible solution is always here — and we meet and exceed your expectations every time..


Steelgard® around the house, on the road, and in the shop


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