Bluing/Metal Refinishing

Bluing and Metal Refinishing

The Griffin & Howe Gunsmithing department offers a comprehensive selection of metal finishing services. Whether you’re looking to restore an older firearm, update an old design, or create a legacy firearm of your own, we can provide a range of options from bluing to hydro dipping.

Metal Preparation

When appropriate, the metalwork is hand polished in the traditional fashion and when needed we perform draw filing to eliminate pitting or other surface issues. Certain imperfections or screw holes can be filled using laser welding.


If your barrel or action has suffered from surface damage or scratches, our gun shop offers polishing services for guns and gun parts upon request. Polishing can be performed as original or to customer specifications.

Bluing Services

Griffin & Howe is happy to offer traditional slow rust bluing services, usually seen on any traditional side-by-side shotgun. We can also rust blue complete firearms, which provides an extremely durable finish.
Tank Bluing – also referred to as hot bluing – is a technique used on most traditional-looking modern guns, that can replicate the color of a traditional rust blue with a modern twist. Bead blasting can also be performed to produce a matt finish.

Nitre bluing is a metal finishing process that involves heat treatment with a salt bath solution. This process creates a stunning vibrant blue color, but is typically restricted for use on small parts as the finish isn’t as durable as other forms of bluing.

Re-bluing can also be performed on your rifle or shotgun, maintaining traditional standards of finish for it to look as good as the original. We can typically rescue and restore most long guns that have been exposed to the elements and have suffered pitting or rusting.

Case Coloring

In addition to bluing services, Griffin & Howe can offer a number of other traditional and modern gun finishes. Case coloring provides a beautiful option for action finish on select shotguns and rifles. We work with several color case hardeners who are able to reproduce the original colors needed as closely as possible.

Other Finishes

Additionally, we offer other services for modern metal finishes, including baked on, sprayed on, and dipped coatings like anodizing, Cerakote and hydro dipping.


Our in-house engraver can touch up any lettering or engraving as needed if affected by the condition of the gun and the polishing process. This can be as simple as an oval all the way to full custom pieces or even gold inlays.


Polish and hot caustic salt bluing – $420
Hot caustic sale blue matte finish – $420
Polish and traditional slow rust blue barrels – $840
Polish and traditional slow rust blue rifle – $945
Color case harden action (prep work not included) – $550
Polish and hot caustic salt blue Winchester 21 style action – $595
Belgian Bluing – Price on Request