Join the #1 community for gun owners of the Northwest
We believe the 2nd Amendment is best defended through grass-roots organization, education, and advocacy centered around individual gun owners. It is our mission to encourage, organize, and support these efforts throughout Oregon, Washington, Idaho, Montana, and Wyoming.
Discuss firearms and all aspects of firearm ownership
Join others in organizing against anti-gun legislation
Find nearby gun shops, ranges, training, and other resources
Discover free outdoor shooting areas
Stay up to date on firearm-related events
Share photos and video with other members
...and much more!
blued steel
Bluing is a passivation process in which steel is partially protected against rust, and is named after the blue-black appearance of the resulting protective finish. True gun bluing is an electrochemical conversion coating resulting from an oxidizing chemical reaction with iron on the surface selectively forming magnetite (Fe3O4), the black oxide of iron. Black oxide provides minimal protection against corrosion, unless also treated with a water-displacing oil to reduce wetting and galvanic action. A distinction can be made between traditional bluing and some other more modern black oxide coatings, although bluing is a subset of black oxide coatings.
In comparison, rust, the red oxide of iron (Fe2O3), undergoes an extremely large volume change upon hydration; as a result, the oxide easily flakes off causing the typical reddish rusting away of iron. "Cold", "Hot", "Rust Blue" and "Fume Blue" are oxidizing processes simply referred to as bluing.
"Cold" bluing is generally a selenium dioxide based compound that colours steel black, or more often a very dark grey. It is a difficult product to apply evenly, offers minimal protection and is generally best used for small fast repair jobs and touch-ups.
The "Hot" process is an alkali salt solution, referred to as "Traditional Caustic Black", that is typically done at an elevated temperature, 135 to 155 °C (275 to 311 °F). This method was adopted by larger firearm companies for large scale, more economical bluing. It does provide good rust resistance which is improved with the use of oil.
"Rust Bluing" and "Fume Bluing" provide the best rust and corrosion resistance as the process continually converts any metal that is capable of rusting into magnetite (Fe3O4). Treating with an oiled coating enhances the protection offered by the bluing. This process is also the only process safely used to re-blue vintage shotguns. Many double barrelled shotguns are soft soldered (Lead) / silver brazed together and many of the parts are attached by that method also. The higher temperatures of the other processes as well as their caustic nature will weaken the soldered joints and make the gun hazardous to use.
Bluing can also be done in a furnace, for example for a sword or other item traditionally made by a blacksmith or specialist such as a weaponsmith. Blacksmith products to this day may occasionally be found made from blued steel by traditional craftsmen in cultures and segments of society who use that technology either by necessity or choice.
Up for sale, Southwest Washington, Vancouver area, Clark county area.
Older Remington 870 Wingmaster barrel.
12ga, 28", 2-3/4" and 3" chamber. Fixed modified choke, silver bead front sight. Nice and lightweight, fast pointing. Very low round count, if any. Bore is bright and shiny. Quality...
Selling my 2021 Blued GP100 with a 4.2" barrel. Shot probably less than 500 rounds through it. This thing is a tank and shrugged off some of my hottest reloads. Selling to make space in my safe. gun is in excellent condition. Upgraded front sight to fiber optic, still have original and will...
For sale is a Ruger Mini-14 Ranch rifle in .223 Remington / 5.56㎜ NATO. This rifle is in the 196 serial number prefix range. It is mechanically sound condition and has only minor wear and handling marks.
It is currently setup with:
Aftermarket wood stock set.
Flash Hider / silencer mount...
Hey All:
Sorry if this is in the wrong section and if a thread already exists about this, but I have an M92 SBR and some other guns I'd like to get hot blued. Are there any in the PDX area that you guys would recommend?
Thanks!
Model 111, Blued, with basic black synthetic stock. This is a pre-accutrigger model with the "flat-back" receiver.
The trigger breaks nice and clean. The bolt opens and closes smoothly and the magazines release and insert without any issues.
Detachable magazine model, 2 will be included with the...
So, I recently acquired a Model 29. It was not added for a defensive piece, but rather because I just like them. Also, maybe, it would be good for bowling pin shooting, and most certainly for target shooting.
That said, it is a solid, nicely built wheelgun, that fits my hand well, so there is...