══ Common types of finishes for metal on firearms  ═══

#1 Combat/Matte (Sandblast/glass bead ) Finish: Also use for Parkerizing 
#2 Hunter Finish (220 Grit):*
#3 Deluxe Finish (320 Grit): /Factory finish (400 grit):

 #4 Blue Mirror polish / Master finish (2000 grit)
Draw Filing / Octagon Barrels:

 

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Most common  is OXYNATE® NO. 7   HOT CHEMICAL BLUING COMPOUND MEETS Mil Spec C13924BAM1, Class 1, Grade A Finest Professional Gunsmith-Developed, Hot Bluing Salts Available on the Market Today  Heat to 300° F.This is can be Touch-up using Cold Bluing  (OXPHO-BLUE® Cold Blue).   For Stainless Steels & Cast Iron OXYNATE® NO. 84 - HOT CHEMICAL BLUING COMPOUND no Touch-up

 

Parkerizing technique is a Phosphate etching process that produces a hard Matte or Dull finish that is both very Durable and Anti Reflective and with excellent oil holding properties.The most commonly types used are the original WW2 type, known as Grey Oxide and the latter Black Manganese, still in use by many Military and Civilian Manufacturers in many countries on a wide variety.

  

Cyanide Case Coloring: This finish is commonly found on single shot actions in the tiger stripe pattern, which we do provide. Parts can also be processed to give the mottled and swirled effect of the bone charcoal method. 

 

Carbonia Blue/Charcoal Blue: This finish is produced in a gas furnace which is exactly how it was done by the manufacturers like Colt, Winchester, Smith & Wesson, and almost all other arms makers before WW II. Carbonia blue is the Cadillac of finishes. It's glossy black in appearance which has a mirror depth to it (when the metal is polished to a high luster), and hard wearing. There are some different methods other shops may try to use and duplicate this finish, but for it to be a true Carbonia finish, it must be processed in a gas furnace retort.

 

Slow Rust Blue & Browning: Our Slow Rust Bluing process is highly controlled in both the rusting environment, and processing time. Over years of research and development, R.G.S. makes every one of our own rusting agents, and when combined with expertly controlled rusting cycles it allows us to develop a finish highly superior to competitors. Rather than a soft etched finish commonly seen from other shops, our finish displays a very distinct keen black shimmer.

 

Best English Blacking: Holland's, Purdy's, Westley Richards, they all use this finish on their Dbl. Gun tubes. The hallmark of Best English Blacking is a very glossy rich black color, which is still a Slow Rust Blue finish. This finish takes much more time than a normal rust blue, but the results are absolutely astounding! There's no better finish than this to adorn a custom rifle or shotgun.

  

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Anodizing, or anodising in British English, is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. The process is called "anodizing" because the part to be treated forms the anode electrode of an electrical circuit. Anodizing increases corrosion resistance and wear resistance, and provides better adhesion for paint primers and glues than bare metal. Anodic films can also be used for a number of cosmetic effects, either with thick porous coatings that can absorb dyes or with thin transparent coatings that add interference effects to reflected light. Anodizing is also used to prevent galling of threaded components and to make dielectric films for electrolytic capacitors. Anodic films are most commonly applied to protect aluminium alloys, although processes also exist for titanium, zinc, magnesium, niobium, and tantalum. This process is not a useful treatment for iron or carbon steel because these metals exfoliate when oxidized; i.e. the iron oxide (also known as rust) flakes off, constantly exposing the underlying metal to corrosion. Anodization changes the microscopic texture of the surface and changes the crystal structure of the metal near the surface. Thick coatings are normally porous, so a sealing process is often needed to achieve corrosion resistance. Anodized aluminium surfaces, for example, are harder than aluminium but have low to moderate wear resistance that can be improved with increasing thickness or by applying suitable sealing substances. Anodic films are generally much stronger and more adherent than most types of paint and metal plating, but also more brittle. This makes them less likely to crack and peel from aging and wear, but more susceptible to cracking from thermal stress.

 

Gold plating adds the beauty & luster to firearms 

 

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