Phosphate vs nitride

The cracking issues were more than cosmetic. And forget the Nitride gas keys, it makes them brittle and the staking cracks far too easily. Also, the nitrided key is harder on the staking tool. No fan.of nitride, but there are a lot of nitride BCGs out there that are issue free as far as keys/screws.

Since most people don't have full auto receivers they won't need the better heat resistance that Chrome offers. With Nitride being cheaper and the potential for better wear resistance over time when using semi auto fire; Nitride would be the way to go on a semi auto weapon. You can see all the AR-15 barrels we have at this link.BOLT CARRIER ASSEMBLY, AR-15/M16, 5.56 NATO, AUTO, MIL-SPEC, BLACK NITRIDE CARRIER, PHOSPHATE BOLT . $179.95. Item Number : TR-BCA-SBNCPB. Add to Cart. Add to Wish List Add to Compare. BOLT CARRIER ASSEMBLY, AR-15/M16, 5.56 NATO, AUTO, MIL-SPEC, BLACK PHOSPHATE . $179.95. Rating: 100%. 14 Reviews ...Quoted: Nitride is a harder and slicker finish than phosphate. Nitride will wear better, last longer, and have less friction than phosphate. There's a reason metal cutting tools (end mills, boring bar inserts, etc) have nitride coatings instead of phosphate. There is very minimal wear surface on a bolt carier. Save on cash and harmful chemicals by making your own phosphate-free laundry detergent. You'll need a food processor, baking soda, Borax and some laundry soap (like Ivory.) Instructables member gowithflo says: Save on cash and harmful chemi...As an upgrade from basic Black Nitride or Phosphate it brings a lot to the table. Check them out here: Toolcraft Nickel Boron BCG. For more on the benefits of Nickel Boron see: Top 3 Reasons You Might Want a Nickel Boron BCG. See our review of the Toolcraft Black Nitride BCG: Toolcraft BCG - Best Black Rifle Secret Ever?2. Heavy buffers and gas deflecting charging handles don't do anything to reduce the fouling coming into the action. Below is highspeed video shot at 480 FPS showing the same 10.5" upper running suppressed with M855 and full auto 10 rounds each. Top one is unregulated and the bottom one is regulated.

and the other part of the conversation "...nitride is cheaper, better tolerances, easier to clean...". one topic that always gets touched on is nitride is easier to clean and CP (chrome phosphate) holds oil better, but the discussion usually stops there even though the threads go on for multiple pages, but that is the major take away.One of the main differences between Melonite or salt bath nitride (SBN) and Chrome-lining is that the former is a chemical process, while the latter is an electroplating process. ... While the Mag Phosphate coating is incredibly resistant to heat elements, its function is somewhat limited compared to the other two coatings since it really does ...Solubility table. The table below provides information on the variation of solubility of different substances (mostly inorganic compounds) in water with temperature, at one atmosphere pressure. Units of solubility are given in grams per 100 millilitres of water (g/100 mL), unless shown otherwise. The substances are listed in alphabetical order.Parkerized Vs Nitride Vs Stainless . Parkerized, Nitride, and Stainless are three different finishings for metal parts. Parkerized is an environmentally-friendly process that uses a phosphating solution to form a textured surface layer of zinc and iron on steel components. Nitride is a hardening process that increases the durability and ...Business, Economics, and Finance. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. Crypto

Posts: 2,119. Nitrade vs. Nickel Boron BCG. Holiday sale. $80 for the Nitrade or $90 for the Nickel. I need a few and the $10 is immaterial if there's an actual performance difference. My biggest complaint of the AR is that it fouls the bolt badly and is prone to jamming due to the gas design. If I can improve the performance for the extra $10 ...Gallium nitride (GaN) is a compound comprised of gallium and nitrogen that work together to form a robust Wurtzite crystal structure. This structure is very strong and has a high melting point, 4532 degrees Fahrenheit, making it suitable for semiconductor base materials in high-temperature settings. GaN's structure will accept magnesium to form ...Chrome lining lines the bore of the barrel with chrome. Nitride is a process of hardening surfaces with a chemical and heat-based process. Criterion discusses the differences between nitride and chrome lining here. Phosphate is a coating applied to the exterior of a barrel to help prevent corrosion.Sodium Phosphate Rectal: learn about side effects, dosage, special precautions, and more on MedlinePlus Rectal sodium phosphate is used to treat constipation that happens from time to time. Rectal sodium phosphate should not be given to chi...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Since most people don't have full auto receivers they won't need the better heat resistance that Chrome offers. With Nitride being cheaper and the potential for better wear resistance over time when using semi auto fire; Nitride would be the way to go on a semi auto weapon. You can see all the AR-15 barrels we have at this link.

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I prefer, in order from favorite to least, NiB, chromed, Nitride, phosphate. I have never had a problem with any of them but find the NiB and chromed clean up so much easier and are visually easier to see if they are clean than the black nitride and phosphated BCG. The phosphated are harder to clean and seem to need more lube to operate as ...Build your AR with confidence by selecting an AR-15 kit from the brands you trust. Palmetto State Armory wants to bring out the armorer in you by offering the best kits at the best prices. Bring out the armorer in you by building your AR-15 from the ground up or upgrading an existing one. Complete your build with our large selection of American-Made AR-15 …PSA AR-15 Pistol 10.5" Carbine 5.56 Nitride Classic EPT, w/ Carry Handle, Black ... PSA 7.5" Pistol-Length 300AAC 1/8 Phosphate 6" Lightweight M-Lok MOE EPT Pistol . Regular Price $799.99 Special Price $549.99. Add to Cart. Add to Wish List Add to Compare. PSA JAKL 300BO Pistol w/o Brace, Black ...Bolt Finish: Nitride. Bolt Steel: Carpenter No. 158 Steel. Profile: Full Auto Profile. Gas Key: Grade 8 Hardened Fasteners, Staked per MilSpec. Features. This Toolcraft Logo'd Nitride BCG is made with a carpenter 158 bolt with a full-auto profile, designed to be used in AR-15 & M-16 style rifles. Bolt is magnetic particle inspected (MPI) for a ...

Nitride is generally better. Phosphate is essentially parkerization, nitride is harder and more corrosion resistant. Chrome lining is a superior bore treatment - by a little bit and for some use cases - but phosphate is a vastly inferior exterior treatment for longevity and corrosion. And because it is two processes, it costs more vs 1 single ...The manganese phosphate coating process includes a specific sequence that normally includes degreasing and cleaning of the metal part, a water rinse, then pickling in mineral acid. This is followed by another water rinse, activation, manganese phosphate, water rinse and lubricating with special oils. The actual manganese phosphate process ...CL barrels have a phosphate outer finish that SUCKS (scratches easily, is NOT corrosion resistant w/o constant oil wipes, etc). Nitride is cheaper AND better than CL in my book. I'm actually as happy with my Ptac nitride middy as I am with my FN CHF/CL middy, and that's saying a lot.The formula for nitride ion is N3?. The term nitride ion refers to any chemical compound containing nitrogen ions that have a negative-three oxidation state. Examples of such compounds are titanium nitride, calcium nitride, boron nitride an...N3-nitride ion C4-carbide ion Oxy-anions Rules: least oxygen: hypo__ite ion less oxygen: __ite ion more oxygen: __ate ion most oxygen: per__ate ion ... copper (I) phosphate tetraphosphorus triselenide gallium oxide Dihydrogen monoxide Provide the correct name for the following acids or bases. NaOH NH 3 H2SO 3 HCN ...Nitride is a better and less expensive surface than phosphate/chrome. The drawback is temperature sensitivity, but the relevant temperature is only reached with sustained full auto. If you don't have full auto, there's no benefit to chrome/phosphate. Any reputable company can dimension a machine part with either surface.Nitride is generally better. Phosphate is essentially parkerization, nitride is harder and more corrosion resistant. Chrome lining is a superior bore treatment - by a little bit and for some use cases - but phosphate is a vastly inferior exterior treatment for longevity and corrosion. And because it is two processes, it costs more vs 1 single ...By troubleshooting problem BCG's, I have found the Gauge Specs to test these dimensions. Carrier Key Bores and NiB Carriers fail my Gauges 10 to 1 when comparing the failure rate of Phosphate/Chrome Lined Carrier & Carrier Keys. For what it's worth, I see similar issues with Nitride BCG's.Looking to pickup a complete Palmetto State Armory (PSA) complete 10.5" upper. They offer it in both Nitride and Phosphate finish - which one should I get? The phosphate ones are about $20-25 more expensive than Nitride. I know both finishes are solid, but always thought Nitride was "better".Sodium chloride is an ionic compound made up of sodium ions and chloride ions in a crystal lattice. Image credit: Wikipedia Commons, public domain. Atoms are electrically neutral because the number of protons, which carry a 1+ charge, in the nucleus of an atom is equal to the number of electrons, which carry a 1- charge, in the atom.

The obtained yellow product was grounded in a mortar into fine grains for further use and labeled as phosphorus doped graphitic carbon nitrite (PGCN). g-C 3 N 4 (GCN) was synthesized following the same above procedure utilizing urea in the absence of diammonium hydrogen phosphate. 2.2. Synthesis of AgI/ZnO

Phosphorus-doped graphitic carbon nitrides (P-g-C3N4) have recently emerged as promising visible-light photocatalysts for both hydrogen generation and clean environment applications because of fast charge carrier transfer and increased light absorption. However, their photocatalytic performances on CO2 reduction have gained little attention. In this …Phosphate Coating. We will start with the most common coating. Phosphate coating, also known as manganese phosphate coating, phosphating, and Parkerizing, is a pretty simple process. The bolt carrier group is placed in phosphoric acid and heated up to around 200 degrees Fahrenheit. This coating is extremely common because it is inexpensive and ...Quoted: I have BCGs in all of them. I prefer, in order from favorite to least, NiB, chromed, Nitride, phosphate. I have never had a problem with any of them but find the NiB and chromed clean up so much easier and are visually easier to see if they are clean than the black nitride and phosphated BCG. The phosphated are harder to clean and seem ...I was wondering if if the difference matters between gas block finishes (nitride vs phosphate). All the nitride finish Aero gas blocks are sold out and the last two parts I need for my 6.5 build is a tube and block. Just was curious if you guys had any advice on whether or not it matters for the gas block. Thanks!The formula for potassium nitride is K3N. A nitride is a chemical compound formed by nitrogen and another element of lower electronegativity. Electronegativity refers to the amount of valence electrons a given element has.Watch this if you'd like to see the differences between Nickel Boron and your standard Black Nitride BCG. Also find out if to see if its worth the extra mone...Phosphate provides better results than nitride and BCM is a better brand than toolcraft. So the answer is pretty easy.For questions or more information on any of our finishes and custom coatings, or to get started on selecting the right finishes for your project Contact Us Today. Contact Us Online. (315) 471-6143. Conversion coatings refers to a coating produced by an industrial metal finishing treatment such as black oxide, phosphate and chromate, that gives ...

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Spikes AR10 phosphate bcg, aim sports 308 nitride, aim sports tin, aero nitride, Brownells nib, psa nitride and a chrome colt. I shoot between 6k-10k rounds a year between 8-12 varying AR platforms depending on weather and time off from work. My favorite to shoot is the tin or nib as cleaning is much easier, no scraping the Bolt, and I don't ...Cancer risk. It's actually sodium nitrite - not nitrate - that's linked to cancer. But if consuming nitrites alone directly caused cancer, then even eating vegetables would be harmful to ...Nitride is generally better. Phosphate is essentially parkerization, nitride is harder and more corrosion resistant. Chrome lining is a superior bore treatment - by a little bit and for some use cases - but phosphate is a vastly inferior exterior treatment for longevity and corrosion. And because it is two processes, it costs more vs 1 single ... Features I'm looking for in a Nitride/Melonite/QPQ BCG: Radius design/Angle Cut (Optional) Carrier with inside and out Black Nitride Treatment…The aim of this article was to deliver a review of the tribological properties of nitride-based coatings attained using various techniques including physical vapour deposition, chemical vapour deposition and spraying techniques. The physical vapour deposition techniques are widely used to deposit a wide range of materials on a number …Unlined barrels served this country well in 2 world wars and a Police Action in Korea. Properly maintain any barrel it it will usually last a a lifetime. Hotlink says nitride, pic in ad shows a nitrided barrel (see how glossy the barrel is compared to the FSB), but description says phosphate. Weird.Definitely not. Nitriding is a bit superior to chrome lining. Chrome lining adds material to the inside of the bore and tightens the throat, causing a slight decrease in accuracy. Melonite Nitriding is a chemical treatment that hardens and protects the bore without changing any of the original tolerances.Here’s a quick summary of the benefits of Melonite barrels: It is a single process in comparison to chrome plating that requires phosphating of the exterior barrel surface. Melonite coating dramatically increases corrosion resistance without oil using. Melonite protects the inside and outside of the barrel.For carriers, the standard is usually 8620 steel, a chrome-lined bore is preferred, but this isn't achievable with coatings such as Nitride. If budget isn't a concern, we would recommend an NP3 or chrome coating. If budget is a concern, the standard phosphate coating works well at retaining oil and allows the carrier bore to be chrome lined. We ... The post Phosphate vs Nitride Barrels appeared first on The Broad Side. Phosphate vs Nitride Barrels It's known as the strongest .357 Magnum revolver in the world.Hard coat anodize in the upper is around low to mid 60's C scale. Some of the PVD and Cvd coatings can be high 60's to low 80's. Parkerizing etches the surface and holds lube. A good parkerized carrier will out live the upper and the user. Craig. [ARCHIVED THREAD] - Chrome phosphate vs nitride - BCGs.DLC vs Nitride What are the pro's and con's of these applications, for a rifle action. Which one holds up better, and is more slick. S. swampbuck Sergeant. Supporter. Full Member. Minuteman. May 11, 2012 696 156 41 Mississippi. Mar 8, 2020 #2 ; DLC is supposed to be more slick. Also more expensive . S. Stoweit Supporter. Supporter. ….

Now, a carbon nitride-supported antimony single atom photocatalyst has been developed with a superior performance for this process. ... (0.1 M) phosphate buffer solution (0.1 M, pH 7.4).Phosphate coated bolt carrier groups have more friction, so they will require more lube to work well. They are also more difficult to clean. Nickel Coatings The next coating we will talk about is the various nickel coatings. These have a variety of names, some of which are nickel boron, nickel boron nitride, and NP3.It seems chrome is just good looking and easy to clean. NiB and Nitriding help reduce required lube and are easier to clean. Nitriding seems new for BCGs, but it reportedly also increases durability. ETA: for the sake of discussion, lets assume SHTF. Posted: 5/8/2013 7:13:13 AM EDT. [#1]Phosphorus, on the other hand, is not directly affected by redox changes. Numerous studies have investigated the effects of redox on As distributions in wetland and sediment environments [31,32,33]. Studies on competitive reactions between phosphate and arsenate for uptake by plants are also numerous [27, 34, 35]. However, few studies …BLEM PSA 16" Carbine-Length M4 5.56 NATO 1:7 Nitride 13.5 Lightweight M-Lok Classic Rifle Kit With MBUS Sight Set . Rating: 100% Regular Price $649.99 Special ... PSA 10.5" Carbine-Length 5.56 NATO 1/7 Phosphate 12" M-Lok MOE EPT SBA3 Pistol Kit with MBUS Sight Set & Romeo MSR . Rating: 90% Regular Price Special ...We're going to find out at what point this rifle will fail and take a look at what the barrel will look like when we get done with it. The barrels are iden...phosphate (ZnCaPh) Phosphates were originally limited to sliding applications (plain bearings and cages) but can also be applied to rolling bearings The soft and porous layer is a very good lubricant reservoir, especially MnPh Nickel-phosphorus (NiP) NiP is a chemically produced nickel coating By changing the amount of phosphorus,All I see different on the specs is phosphate vs nitride barrel finish, 158 vs 150 steel for the BCG, and different gas blocks (I'm assuming that the front sight is the gas block on the 2nd one but I'm just a moron on the internet. Are those differences worth the extra $220 plus another $100 for the brace I like?1:8. Nitride and midlength are better. This. Coatings mean a lot less than gas system length. And twist rate. 1:8 is a nice twist rate for handling most common 5.56 weights. Meh. 5.56 twist varies from 1:6 to 1:12. For most people anything between 1:7 and 1:9 is fine. Phosphate vs nitride, Titanium Nitride. This offers BCGs excellent durability, plus slickness and smoothness in operation. Titanium nitride is tougher than nickel boron and phosphate coating, often resulting in longer carrier group service life. Coated steel has unmatched heat and corrosion resistance capabilities since nitride changes its molecular structure., The nitride process heats the steel up then dissolves nitrogen into the steel... Long story short, the nitrogen only goes (with any serious concentration) maybe .005-.010" into the surface, and the nitrogen atoms act like gravel in gears (the gears being Fe and C atoms in the crystalline structure of the steel) and prevent movement on an atomic ..., I have to wipe it down with CLP because out of the box the bolt looked nitride in finish and even after wiping down it still was very smooth black finish so I popped out the bolt and looked into the carrier to see if it was chrome lined. The bolt is very well finished and the phosphate is very smooth almost looks like a matte nitride finish., Go nitride. Better barrel life and reduced chances of corrosion. They do phosphate because it's cheaper and PSA is a "Value oriented" brand. If you watch their sales, the nitride can usually be found for the same prices as the phosphate regularly. Posted: 8/20/2021 6:23:35 AM EDT. , Go nitride if you can. Phosphate has a rougher surface, it's good at trapping oil and I DO recommend you keep it well oiled. Nitride is slicker and has better rust resistance, im not sure if it's any better for wear but ya.. go nitirde if you can. NITRIDE!!!!! Go nitride, they are maybe $5 more and well worth it. , None of those is superior to mil-spec phosphate coating. Military experimented with hard chrome and nitrided BCG's early in the development of the M16. The original AR15 spec'd a full coverage HC coating. Resulted in increased failures due to cracking at high stress points. There is no performance reason to chose anything …, Best AR-15 Bolt Carrier Groups (BCG) 1. Bravo Company Manufacturing (BCM) M16 BCG. Let’s just start with our editor’s pick for a branded mil-spec BCG. If you ask most people online what’s their go-to BCG…the vast majority is going to be BCM’s M16 BCG. BCM M16 BCG., AR barrel steel is the base metal that the finish and coating goes over. As the foundation, it is important up to a point. There are four main steels used to create AR-15 barrels, the last of which could broadly be called “stainless steel.”. As it happens, several types of stainless steel are commonly used in barrel-making, which we’ll ..., 20 giu 2019 ... Is the nitride finish just for environmental corrosion like with any other gun, or does it help with corosion from the powder/primer as well? I ..., Nitride is pretty well established to be a sufficient substitute for chrome, assuming the surface dimensions are specified correctly for nitride treatment. Chrome has a known good track record, with only old Colt managing to really screw it up enough that they asked to change to chrome internal lining and phosphate, giving us the Milspec BCG we ..., Chrome/NP3 > Phosphate >> DLC >>>> Nitride > TiN > NiB After that, just pick any reputable manufacturer. If I gave you whatever gauges you needed and 15 phosphate BCGs from 5 different reputable manufacturers, you'll never be able to find any kind of trend. However, if I gave you 15 BCGs from the same manufacturer with 5 different coatings ..., The preparation of phosphate-based adhesives requires the synthesis of a phosphate solution. In accordance with a P to Al molar ratio of 3:1, aluminum hydroxide (Aladdin AR) and phosphoric acid (concentration of 60 wt%, Tianjin Tianli Chemical Reagent Co., Ltd. AR) were weighed and mixed together with a magnetic stirrer for approximately 1 h in a water bath at 80 °C., Go nitride. Better barrel life and reduced chances of corrosion. They do phosphate because it's cheaper and PSA is a "Value oriented" brand. If you watch their sales, the nitride can usually be found for the same prices as the phosphate regularly. Posted: 8/20/2021 6:23:35 AM EDT., In short, no. Standard phosphate BCGs will hold lube better but not be as slick. Nitride is slicker but does not hold lube as well. NiB is much like Nitride but may flake or chip. Personally, I use phosphate and Nitride carriers and have no desire to spend more money for something that does the job equally as well., Aluminum of the upper should be anodized and if you bought a matched set it should match. It'll just be the barrel and maybe some steel parts (FSB, Flash hider, etc), the receiver will be anodized and match. This. Nitride and phosphate are surface treatments for steel only. Anodizing almost exclusively refers to aluminum., The perfect upper for your registered AR-15 SBR or AR-15 pistol! Barrel: 7" 4150V Chrome Moly vanadium steel, nitride treated for durability and chambered in 300AAC Blackout with a 1 in 7" twist. Pistol length gas barrel is finished off with a Magpul MOE M-Lok carbine length handguard, a low profile gas block and a patent-pending PSA muzzle ..., MH Nitride (Melonite) is a chemical process performed at high temperature (975-1100 degrees) in a cyanate salt bath. The finish is on the inside and outside of the barrel. Glock uses this process and they call it Tenifer. 5.)Phosphate coating - common way the barrels are protected against the elements. Phosphate coatings are a crystalline ..., Pool Phosphate Removal Tips: 1. Before testing for phosphates, water should be balanced, and chlorine level below 5 ppm. 2. Algae should be treated and pool clean before testing and treating phosphates. 3. Correct the source of the phosphate contamination, or use weekly maintenance dosage. 4., I also probably should have mentioned that the NiB BCG is a 9310 heat treated bolt, and the nitrided BCG is a shot peened 158 carpenter bolt. Nitride is pretty great, however I run NiB in all my rifles simply for the ease of cleaning. Also, Cryptic gang baby. I would try one of those out, the coating is unreal., Regular and phosphate are the same, phosphate is the mil spec coating. Similarly, nitride and melonite are the same thing. Phosphate is just fine, requires plenty of lube, but will last a long time. Nitride is a chemical treatment of steel that hardens the steel quite a bit (just the outer layer) and leaves a very smooth finish that has some ..., Alloy Steels. Suitable barrel alloys include types having varying amounts of chromium, molybdenum, vanadium, nickel and manganese as alloying metals. A popular example and perennial favorite in the U.S. is called SAE 4140 chrome-molybdenum or "chrome-moly" steel. In Europe, vanadium and nickel-steel alloys are preferred., Easy cleaning is easy, mil-spec phosphate is the strongest finish by a country mile. I used to think in the mode of Paper vs 2 or 4 legged critters. Nitride lets you compete with the beauty queens, mil=spec phosphate has never been the reason someone didn't come home or not be able to chose: between the eyes or left/right pupil., The nitride layer is composed of two principle zones. Zone 1, called the compound or "white" layer, extends to a case depth of ~0.0004″ to 0.0008″. The compound layer is porous, which lends to the lubricity of the finish, and hard (~700HV to 1600HV). Zone 2, called the diffusion zone, extends to a case depth of ~.004″ to 0.008″., Nitride is the way to go these days if you're not going with stainless. Far more corrosion resistant and harder than phosphate, and can be applied in the bore without effecting accuracy or dimensions, unlike phosphate. Another plus (to some) is that the finish looks more like traditional bluing, vs the matte/textured look of phosphate., My WMD NiB-X has had zero extraction issues. Perhaps the phosphate bolt in nitride carriers is that the temperature to do QPQ properly is very close to that which could soften the temper on the bolt. That could be dangerous. Been using a QPQ extractor for well over 2000 rounds suppressed on my DDM4 16.1" Middy., We can simply refer to the cation in the ionic compound as magnesium. Phosphorus, P , is a group 15 element and therefore forms 3- anions. Because it is an anion, we add the suffix -ide to its name to get phosphide as the name of the ion. Therefore, the name for the compound is magnesium phosphide., Mg 2+. 10. 12. Al 3+. 10. 13. Each ion: contains the same number of electrons (10; with configuration 1s22s22p6) and are thus termed a collection of isoelectronic ions. varies in the nuclear charge., May 27, 2023 · IMO, the Black Nitride finish is the best bang for the buck of the black BCG finishes. It is a super hard finish that runs smooth and is both easy to clean and easy on the wallet. For a comparison of the top 3 black BCG finishes see our article The Best Black BCG Finish - Phosphate vs Nitride vs DLC . , Phosphate vs nitride refers to the process on the steel parts. Phosphate is a kind of coating that is added to the steel. It causes the metal to turn black and adds a semi-corrosion resistance porous coating. You have to keep it oiled to prevent corrosion, but as long as you do it's fine. Nitride is a process where the steel is submerged in a ..., Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear., See who Finishes Strong in this Corrosion Test (ASTM B117) between two barrels, one coated in Cerakote Ceramic Coatings by Traditions Performance Firearms an..., Feb 6, 2017 · MIL-SPEC is manganese phosphate, which requires oil to provide excellent corrosion resistance on the outside of the barrel. Mag phos typically has a matte grey finish. Nitride. Instead of adding material to the bore (like Chrome lining), Nitride treats the existing steel by imbuing nitrogen into the steel itself. , nitride N3-phosphate PO 4 3-phosphite PO 3 3-phosphide P3-Name: Date: Created Date: 4/5/2017 11:40:28 AM ...