April 10, 2019, CMMG, Inc 9mm Barrel and Bolt Carrier Group (BCG) Kit. Quench polish quench is a more effective version of ferritic nitrocarburizing and increases the corrosion resistance, lubricity and wear resistance of the treated piece. The Odin Works AR-15 Low Mass BCG offers more than its lightweight convenience. If you have any questions, don't hesitate to send us a message at info@primaryarms.com or call us at 713-344-9600. Many Manufacturers use cutting-edge proprietary coatings and make some of the best BCGs on the market. This process initiates a reaction that converts any rust-tending metal to magnetite and effectively kills the rust process before it can even begin. If you want to upgrade your AR-15 to the next generation of competition BCGs, the Iron City Rifle Works G3 is the perfect choice. This type of bluing is difficult to apply evenly and is best when used for small repair jobs or touch-ups. The DuraBolt's shrouded firing pin and increased weight go a long way in keeping your firearm working reliably. 9AM-5PM CT Sat-Sun (Chat & Email Only), Black Rain Ordnance Salt Bath Nitride BCG 5.56/.223, Black BRO-SPEC15-BCG, Black Rain Ordnance Salt Bath Nitride BCG 5.56/.223, Black, BRO-SPEC15-BCG. YouTube sets this cookie to store the video preferences of the user using embedded YouTube video. Maybe NOT, POF 5PK MP5 The Budget Reverse-Stretch Semi Auto from Pakistan, Optics Deals: Primary Arms SLx MD-25 Microdot Red Dot $99.99 FREE Shipping, Survival Deal: Thyrosafe Potassium Radioactive Iodide Tablets $21.95 FREE S&H, Ammo Deals: Winchester .223 Rem 55 Grain Lake City FMJ 500rnds $239.20 FREE S&H REBATE, Brownells Coupon Codes www.brownells.com Updated Monthly. We also recommend purchasing lighter buffers and, in some cases, lighter springs. We conducted a series of studies in order to investigate the microstructural, mechanical and tribological properties of salt bath nitrided AISI 4140 steel. The completed process will produce a gray or black finish. This finish can be applied to materials of all types, including plastic, metal and composite surfaces. High pressure tested and magnetic particle inspected. In this research, gray cast iron samples were nitrided at the temperature range of 480C-580C, and then oxidized in an oxidative salt bath. This drop-in AR-15 BCG features a corrosion resistant salt bath nitride finish, MIL-SPEC dimensions, and a magnetic particle inspected carpenter 158 steel bolt. All of its high-quality steel components are nitride-coated, giving them a tough surface with inherent self-lubrication. On a BCG with a nickel boron coating, this wear exposes the undercoat, allowing the shooter to experience the benefits of reduced friction. For further information, read on and learn about six different gun part coating options: bluing, Parkerizing, anodizing, Cerakote, nickel boron and ferritic nitrocarburizing. 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The M16 BCG is the design used by the military and is rated for full-auto fire. The combination of low cost, high durability, and military use make phosphate-coated BCGs the most popular coating on the market. High Pressure Tested: Individually HP Tested. The Bolt Carrier Group (BCG) is a critical component of the AR-15. However, you may visit "Cookie Settings" to provide a controlled consent. 66: These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. 9mm Para. If you are like me and want to keep it all black. 8% OFF Sitewide + 5% Bonus Bucks - code: SAVE8, : This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. You do not have access to www.brownells.com. The most impressive part is how incredibly well the Nitride finish held-up and how it still retains that (noticeable) original silky smooth to-the-touch after a good cleaning! The __qca cookie is associated with Quantcast. Like Chrome, the treatment greatly increases corrosion and abrasion resistance. THARIVAL, The parts are also meticulously inspected to ensure only the best components make it into your rifle build. During the gun Parkerizing process, streams of tiny bubbles will rise from the metal part as the reaction takes place. Analytical cookies are used to understand how visitors interact with the website. More lubrication also means that the components will attract more dirt and debris. The Precision Defense 5.56 M16 Complete Bolt Carrier Group is machined from high-quality materials to ensure your AR-15 will run reliably as long as you have ammo to shoot it with. This bolt group features a full-auto design, is M16-compatible, and offers top-quality performance and durability. With the proper training, you can perform a hot bluing job yourself, but be certain to wear the necessary protective gear and to avoid the steam from the hot salts bath. Whether your shooting habits are simply a box or two of shells a month, or you run through thousands of rounds makes a difference in which is the best bolt carrier group for you. Even in a semi-automatic firearm, this process can happen multiple times per second depending on the skill of the shooter. Without select-fire, a standard AR15 BCG will offer similar performance for most rifles. Ferritic nitrocarburizing was first performed in England by the Imperial Chemical Industries. You also have the option to opt-out of these cookies. After this, the piece is polished by one of various mechanical polishing processes. Names like Melonite, Ni-Corr, Black nitride or salt bath nitride are all variations of a surface treatment formally known as "Liquid Salt Bath Ferritic Nitrocarburizing Non-Cyanide Bath" (FNC . 55: Bath Replacement. 7 Gas is also vented through 2 holes on the side of the BCG. Cerakote requires little maintenance and will last you for years before needing a touch-up. The Bolt Carrier Group (BCG) is the heart of your AR 15. Now that you know everything about your next Bolt Carrier Group, browse our vast selection of BCGs here at Primary Arms, your one-stop-shop online gun store. The cookie is used to store the user consent for the cookies in the category "Analytics". With its incredible engineering and high-quality this could easily be considered one of the best AR-15 bolt carrier groups on the market. It has been linked to the development of heart . When building a rifle, youll need to choose a BCG style that makes sense for the rifles purpose. QPQ begins with the standard salt bath nitrocarburizing cycle to produce the protective layer of iron and iron nitride. 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They are most often used with a nickel boron coating, where the user wants the benefits of higher lubricity, but does not like the shiny metal. This website uses cookies to improve your experience while you navigate through the website. doubleclick.net - browser supports cookies. Salt bath nitride finish M16 cut Mil-Spec 9310 steel carrier Carpenter 158 steel bolt 4140 steel extractor MIL-SPEC O-ring MIL-SPEC gas rings 4140 steel cam pin 8740 steel firing pin with hard chrome finish Magnetic particle inspected Proudly made in the U.S.A. NITRIDE COATED FULL AUTO RATED BOLT CARRIER GROUP Order Info: It's finicky, costly, and not very easy to control for complex parts like a BCG. This cookie is set by GDPR Cookie Consent plugin. Its lighter than steel and stronger than either steel or aluminum. The extractor is made from S7 tool steel to withstand thousands of rounds and the gas key is machined from a stock of billet steel with properly staked screws. I purchased this after ordering a DD BCG and selling it. 54: Salt Bath Nitriding Equipment and Procedure. Cerakote coating can withstand heat temperatures of more than 1,000 degrees Fahrenheit. Receive exclusive deals, new product announcements and need to know information. Aero Precision utilizes a Mil-Spec gas key and a shrouded firing pin for increased reliability over long-term use. Not the least of which is the intended purpose of the weapon followed closely by your budget, firing frequency, and aesthetic appeal. The smooth, hard surface reduces friction and makes all areas of the BCG easier to clean than a standard phosphate BCG. YouTube - Store data on what videos from YouTube the user has seen - 2. One benefit of the AR-15 platform is the ability to switch calibers by swapping a complete upper or by replacing the barrel, bolt, and magazine. Cerakote is a ceramic-based coating which is available in various colors. 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