That is due to the way phosphorus reacts with low carbon, which can cause embrittlement. Have a similar one in nitrate that shoots fine. Nickel Boron. Proud Deplorable. Doc Holliday. Both are reliable and accurate. Today I have a mini post to share with you some light accuracy testing of the PSA 20 inch nitrided barrel assembly. Gas System Length: Midlength. I own several PSA BCG's and they have all held up just fine with no problems, would not hesitate to buy more. Every citizen should be a soldier. Get the top Guns & Ammo stories delivered right to your inbox every week. I'm sure this has been asked before. Barrels 2, 3, 588, and 590B were … Phosphate vs Nitride finish I've got the urge to pick up a few uppers sometime soon. Back in stock a day or so later of course. You can nitride a 4140 barrel and it will hold up very well, often almost as long as a 4150 barrel that is chrome lined. Cerakote vs. Nitride The Corrosion Resistance King In a head-to-head test, Cerakote was put up against Nitride in a salt chamber to see which would be the most corrosion-resistant. Right now kinda comparing apples to apples with a ba hanson barrel they have either a nitride or chrome lined barrel/phosphate coated barrel difference being about a 100 dollars in price. Thread Pattern: 5/8 x 24. AR barrels: Parkerizing/Phosphate vs. Nitride/Melonite. ©2020 Outdoor Sportsman Group. I accidentally  purchased a phosphate 223 Wilde barrel. Say you're going to buy a 16" chrome moly barrel for you AR, use will be general shooting, plinking, toting around and shooting. When searching for a bolt carrier group to purchase, you will run across NiB or nickel boron. Nitriding is a surface conversion process whereby manufacturers submerge the barrel in a nitrogen-sodium solution and heat to a high temperature, u sually between 750 and 1200 degrees. breamfisher Senior Member Posts: 13,511 Senior Member. December 2016 in General Firearms #1. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. PSA has some great prices, but I'm not sure of the practical differences between the phosphate and nitride finish. Palmetto State Armory Nitride Barrel Accuracy Test: Initial Run . I'm kinda leaning nitride on price and increased corrosion resistance. A Nickel Boron BCG with its slick surface will clean up quite a bit easier and faster than a standard BCG with a phosphate finish. Sample size of 2, YMMV. Black Nitride goes by a few names, Ferritic Nitrocarburizing, Melonite, SBN "salt bath nitriding", QCP and Tenifer, that are all names for the same thing, the only difference would be Tenifer, this process is used in Europe with a different cyanide formulation bath "EPA wont allow that in the US". Both extend life similarly. I have both from them. It'll have an A2-ish profile. •Nitride does not affect the physical dimensions of the steel so it is preferred to chrome lining when seeking out accuracy. If you want that smooth feeling you get from a nitride bcg I’d recomend using a nitride carrier from a reputable company paired with a mil spec phosphate bolt and extractor. Share this: … HC and nitride coating cause the same substrate cracking. Chrome lined barrels are typically phosphate parkerized to protect the exterior steel from rusting, but this exterior finish does not offer the same level of corrosion resistance offered by the salt bath nitriding treatment. That is due to the way phosphorus reacts with low carbon, which can cause embrittlement. One thing that makes Nitriding Superior the disposal cost of what is not used. It did not drop fit in and they needed to have a gun smith custom fit the barrel which I opted to hold off. AR15.COM is the world’s largest firearm community and is a gathering place for firearm enthusiasts of all types. Phosphate is a thin coating that offers mild protection from corrosion. We stock a huge selection of barrels ready to ship right away; trust Arm or Ally© has you covered! You get a more heat resistant steel and have the bonus of nitride treatment for hardness and corrosion resistance. View Profile View Forum Posts View Articles … Thread Status: Not open for further replies. At the end of the day this is not a huge reason to choose a Nickel Boron BCG, it's just a little benny that comes along for the ride. That means its good inside the AR-15 or on the outside. To start viewing messages, select the forum that you want to visit from the selection below. I used a Nitrite BCG in my last build, after a few thousand rounds looks like new. Phosphate vs Nitride These are two of the least expensive finishes available. Nitride: Nitride is used to harden the metal which vicariously increases the lifespan of the barrel. There for corrosion protection and nothing else. Black Nitride. 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 built in lubricity, still needs lube just not quite as much. by Steve Adelmann - Saturday, December 30, 2017. Rated 5 out of 5. Rubbing against anodized aluminum that has the hardness approaching tungsten carbide is going to wear away NiB too. Is very innacurate. We purchased one of these barrels for a repeat customer of ours in which we built a custom rifle. This is a hard coat anodized and forged 7075-T6 A3 AR upper. Palmetto State Armory 10.5'' Nitride 5.56 AR-15 Pistol: The Best Truck Gun? id like to know if their barrels are decent quality and will last a good amount of classes or atleast good enough to outperform me as a crappy shooter lol, so i can afford to take more classes to get better . 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. Proud Poop Flinging Gremlin. 633 0 0. No chrome lining on the bore. -Fits barrels with .750 Outer Diameter-Constructed from 4150 hardened steel-Choose No Aero Logo or Aero “A” Logo blocks-Nitride or Phosphate coating-Low profile for easy fitment-Set Screws are Steel 10-32 x 3/16 Knurled Cup Point-Made in the USA-*Roll pin not included* To learn more about Aero Precision and their new Nitride and Phosphate AR15 Gas Blocks. Barrel Length: 18" Twist Rate: 1:8. You still have to get a good blank. Because of the silvery color it's also easier to see where the dirt is and you also know when it is clean much easier than with a black nitride or phosphate BCG. NitrideInstead of adding material to the bore (like Chrome … Nitriding has several trade names such as Melonite, Tenifer, QPQ, Salt Bath Nitride, and others. The nitriding process serves to enhance corrosion resistance on both the interior and exterior of the barrel. This AR15 barrel features 5/8×24 tpi threads, and a chamber and gas port optimized for reliability. If ... Phosphate (3) QPQ Nitride (98) Black Teflon (2) Machined from 4150 chrome moly steel with a 1:8 twist rate and nitride finish, this barrel will deliver round after round consistently and accurately. The rest of the series can be found at the links below: Part 1: Intro, Fundamentals, and Manufacturing of AR Barrels There wear resistance part is a wash too, the only parts of the carrier that applies to are the pads which ride in the reciever. 08-10-2018, 01:56 PM #2. I am about 75% done with my first build. This article is part 5 of a 5-part series about AR-15 barrels. Stainless steel barrels are used for long range accuracy. Poor soul, you were just too high strung." This article is part 5 of a 5-part series about AR-15 barrels. I would have preferred the nitride barrels, but both time I went to order they were OOS. Each barrel was placed in the salt chamber and after just 8 hours the Nitride finish barrel began to show signs of corrosion. razorback2003 Member. Smith and Wesson nitrides stainless steel for their M&P line. That should answer your question unless the newer gens have different barrels. "You're no daisy! I have two of the $259 kits I bought, both with the phosphate barrel. The nitride barrel life is all dependent on how you treat it. Phosphate coating can be applied to both the barrel and bolt … AznZOhAn New Member. That means its good inside the AR-15 or on the outside. Rubbing against anodized aluminum that has the hardness approaching tungsten carbide is going to wear away NiB too. Phosphate is just fine, requires plenty of lube, but will last a long time. Discussion in 'Rifle Country' started by razorback2003, Aug 23, 2015. Have both CL and Nitride barrels, all function as intended and are accurate. I watched mr gunsngears meltdown video. Not the best picture. When you compare phosphate vs nitride, this inexpensive option is used in military applications due to its low cost and extreme durability. I use PSA 20 in CHF barrel one of my rifles and get about 1 to 1.5 groupings at 100 yrds non free floated. Joined: Aug 24, 2008 Messages: 1,231. I have like 5. The M4 profile barrel is phosphate coated to Mil-Spec and has been High Pressure tested as well as Magnetic Particle inspected. Would you nitride/melonite a rifle or cerakote one? Stainless steel barrels are used for long range accuracy. It'll be scoped, 9x on the top end at the maximum. These Ar15 gas blocks are available in a black nitride finish or a standard MILSPEC phosphate coating. breamfisher Senior Member Posts: 13,511 Senior Member. The BCG on the right gives you a sense of what the rougher texture phosphate looks like. Nitride is supposed to be a little tougher and I like the smooth look. Does the ones you're looking that list phosphate also list it as "chrome lining: no"?? CL barrels are FN and Colt, Nitride are BA and PSA (the 10.5", probably made by BA but not certain). However a phosphate BCG against a carbon steel or stainless steel barrel is not a good idea. That being said, our nitride barrel life span for average use is 12,000 rounds. Mag phos typically has a matte grey finish. Any use of this content without express written consent is prohibited. Upper. It has standard handguards and A2 flash hider. Aug 26, 2012 #1 . in order for me when talking about durability. Posted On: 31st January 2020; By: lothaen; With 4 Comments; Hello, frenz. You're no daisy at all. The new Freedom Hammer Forged barrels are not made by FN, they are PSA barrels. Barrel Nitriding vs Chrome Lining. www.sst.net Chrome Lining vs. Salt Bath Nitriding: Which Barrel Finish Is Better? Chrome has excellent corrosion and abrasion resistant properties, but only coats the inside of the barrel. Nitride chromoly vs stainless barrels Discussion in 'AR-15 Discussion' started by AznZOhAn, Aug 26, 2012. Still need a buffer assembly, bolt … With the barrel you have on this upper it is a 1:7 twist meant to stabilize 55gr and larger bullets. Accuracy testing can be a chore, but this is more of a mini-assessment. AR-15. 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