Nickel Boron EXO M16 / Ar15 Full Auto Bolt Carrier Group: Titanium Nitride TiN M16 / Ar15 MPI Bolt Carrier Group 5.56/223: FailZero Nickel Boron EXO Coated M16 Complete Bolt Carrier Group: $304.22. Toolcraft Diamond DLC BCG Review - The Best BCG Ever Made? The main reason to get this finish is going to be appearance. The titanium nitride coating provides a very slick surface that makes for easier cleaning and increases reliability. Precision made in the USA. This is the battle of the silver finishes. Phosphate has been serving the military well for many years and it works very well. The Bolt Carrier Group is the heart of your rifle, and if you want to upgrade the functionality of your rifle, this is a great way to do it! There's a vast number of finishes available for AR-15 bolt carrier groups (BCGs) today. This is one of six BCGs usable in high luster coatings of all sorts. Young Manufacturing NM Chrome Bolt Carrier Group (Rainier Arms). See our review here: Toolcraft BCG Review - Best Black Rifle Secret Ever? It is extremely slick while also being very corrosion resistant. The only difference between the two profiles is the shroud. Aero Precision Nickel Boron BCG (SpiceTac). The low coefficient of friction and high operating temperature capabilities makes this one of the best options for your firearm. None of the other finishes (Nitride, DLC, Titanium Nitride, etc) will be chrome lined in these areas. Titanium Nitride Coating is a highly tough material practical as a coating material for instruments and implants. Titanium nitride is a refractory compound with high microhardness and chemical and thermal stability. Current mil spec for bolt carrier groups in military rifles (M16 and M4) is phosphate. It’s a super-strong, lightweight BCG designed to stand the test of time. Toolcraft Diamond DLC BCG - The Best BCG Ever Made? In both categories though, Nickel Boron has the edge over Nitride. Is that little bit of extra performance important to you? 3. The general consensus is that a nickel boron coating provides a smoother finish, but ion bonding is a close second. That Nickel Boron finish is MIL-SPEC on some Army mortar tube components. Toolcraft is an OEM provider of BCGs to AR15 manufacturers. Where To Buy Body Armor Online [Dec 2020 Update], MAG-120 - Massad Ayoob Group Level 3 Class Overview, MAG-40 - Massad Ayoob Group Level 1 Class Overview, Aero Precision M4E1 Lower Receiver Takedown Pin Set Screw Installation, Top 3 Reasons You Might Want A Nickel Boron BCG . Standard nitride is commonly applied via a salt bath. It has also been found to be well-tolerated with prosthetic implants. Create a free website or blog at WordPress.com. In line with the professionals, the use of titanium nitride in thin sheets of joint implants has no damaging outcomes on human cells. Moreover, the titanium properties have resulted in many applications that include medicine, marine, technology, aviation and other applications that today we take for granted. The best part is that it’s relatively inexpensive to apply when done in bulk, so you can pick these up for almost the same price as a phosphate BCG (and sometimes cheaper). Titanium Nitride Coatings (TiN) TiN coatings give the smoothness of nickel boron, but with a sleek, gold finish. Nickel Boron Coating creates a permanently lubricious surface, harder than the substrate itself, which eliminates the need for oil, grease, or any type of wet lubrication for the life of the BCG. Add the Rubber City Armory Titanium BCG’s proprietary nitride finish and you have a bolt carrier group that is lightweight, smooth, and tough as steel. Or you are doing a retro build, which I can appreciate! This was at the direction of Eugene Stoner, the designer of the AR-15. Plus, they literally look like gold. Don't get me wrong, I've cycled some gritty ass … If you go chrome it will probably be for the color and the uniqueness of the finish. Also, the nitride carriers I've seen aren't chrome lined, and that's a no go for me. For schedule, pricing, prerequisites, and required equipment see the The very first AR15 bolt carrier groups were hard chrome plated. Sadly, Titanium nitride is not a state-of-the-art conductor as compared with metal. Aero Precision products are solid and their bolt carrier groups are no exception. Although it’s all right there in the name, this process is different than standard nitride. In fact, chrome BCGs are somewhat difficult to find today, but worth it if you can find one. Today, other finishes are much more common, all of which try to improve on the original chrome in either price or performance. See our Toolcraft DLC BCG review here: Toolcraft Diamond DLC BCG - The Best BCG Ever Made? Nickel Boron is an advanced metal finish that offers high resistance to wear and corrosion as well as having an ultra low co-efficient of friction. A titanium AR15 BCG offers you the strength and durability of steel at a fraction of the weight. The best titanium bolt carrier group I’ve found is from V Seven Weapon Systems. Last but, most certainly, not least, we have Titanium Nitride (TiN). Always choose the finest one. The Electrolytic Advantages Of Electroless Nickel Plating, Thermal Barrier Protection Barrier Against Oxidation. Nickel Boron is very desirable as it requires less lubrication and results in less malfunctions (when treated properly). Ionbond Black DLC will not chip, crack or peel, providing you with years of reliable function and protection against wear. 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