Add to Wish List Add to Compare. Even though it is a popular choice, nickel boron can and does flake off from time to time so it is recommended to purchase a high end bolt carrier group from a manufacturer that warranties the coating. The resulting finish is extremely wear and corrosion resistant. Some of the early M16 rifles adopted by the US military had a hard-chromed bolt carrier. This treatment is great for use on barrels to prevent corrosion and increase barrel life. Limited Lifetime Warranty, Assembled Bolt Carrier Group for AR-15/M16, Properly torqued The carrier comes with a Black Nitride finish for great corrosion protection and wear resistance. $170.05. St. Peters, MO 63376, [VIDEO] Top 10 Best Super Bowl 50 Commercials (2016 Funniest Ads), How to Hit the G-Spot with the New Bang Switch. PSA 5.56 NITRIDE MPI FULL-AUTO BOLT CARRIER GROUP. It is a chemical process that is achieved by soaking the parts in a boiling manganese solution, this practice is also known as parkerizing. This BCG is designed for shooters looking for a tactical advantage resulting from the non-reflective properties of Black Nitride. It also features the traditional style AR extractor that will give you long and reliable use. We take strides to sponsor the shooting sports, getting the next generation involved to help ensure the Second Amendment remains intact for the future. This means that all contact surfaces of the BCG will experience less friction and smoother, more reliable function. reliable extraction, Firing pin precision machined from 17-4 H-900 Stainless Steel, Midwest Industries Your Price: $129.95 Out of Stock. Notify Me. Steel Finish: Black Nitride. bar stock, heat treated and shot peened, Phosphate coated for Each element of the bolt-carrier group is finished in a black-nitride coating. The Faxon Firearms Full Mass Black Nitride Bolt Carrier Group For AR15 Style 5.56 / .223 Rifles is M16 full auto compatible, has forward assist serrations, is fully heat treated, 8620 steel carrier, 9310 steel bolt & QPQ salt bath nitrided. This black nitride BCG from Toolcraft is a popular choice for AR-15, M4 and M16 builds due to its mil-spec design and lifetime warranty. Nitriding vastly increases the hardness of the metal that is treated without changing the material dimensionally like the build up of a hard coat. If ever a problem, simply call Toolcraft and they will take excellent care of you with their no questions asked Lifetime Warranty. A barrel that is nitrided is going to be more accurate that a chrome lined barrel because chrome plating takes away some of the sharpness of the rifling. Limited Lifetime Warranty, Midwest Industries Inc Products for Ruger® 10/22®, Midwest Industries Inc Products for Ruger® PC Carbine™. True Mil-Spec Bolt Carrier Group; Material: Case Hardened 8620 Steel; Finish: Black Nitride. The black nitride finish features excellent hardness and lubricity, which means this BCG is durable, easy to clean, and less reliant on lubrication when compared to mil-spec phosphate coating. Iron City Rifle Works G3 Competition Enhanced BCG - Black Diamond . Complete 5.56 Polished Black Nitride BCG. These bolt carriers had a natural lubricity and proved to be durable, the only downside being that the hard chrome plating was prone to flaking. Notify Me. The carrier is made from 8620 steel. The bolt is made from 9310 steel and is MPI Tested and engraved. The Brownells M16 5.56 Complete Bolt Carrier Group is constructed with a bolt made from 9310 steel, which is finished with a heat treatment and shot peening. Gas Key: 4130 Steel attached with Grade 8 hardware and properly staked into a milled “valley” to ensure proper positioning. That’s why I and many others choose black nitride. Black Nitride is becoming more common and slowly replacing the parkerizing of steel parts. It is shot-peened and magnetic particle inspected. The carrier comes with a Black Nitride finish for great corrosion protection and wear resistance. NiB coated bolt carrier groups are in the middle range on price, more costly than black nitride or phosphate but far less than Titanium Nitride. AR-15 Nitride Bolt Carrier Group Mil-Spec ... $119.99. Now you too can get this outstanding BCG at a fraction of the cost. In Stock. And, the price is reasonable. Backorder OK. AR15 5.56 / .223 Nitrided BCG Complete Bolt Carrier Group. Bolt Carriers made from 8620 Steel, 6A1-4V Titanium or Aluminum; Keys made from 4130 Steel; Bolts available in 9310 Steel or Carpenter 158 TiN is a thinly-applied surface coating has a shiny gold-like appearance and is often used for show builds due to aesthetics. Black Nickel. Choosing a bolt carrier group can get pretty touchy because everybody has an opinion of which is the better coating or treatment. Finish is Black Nitride which is a metal treatment that produces a case-hardened surface. 100% Made in USA and includes Lifetime Warranty from Toolcraft. Your Price: $299.95 Out of Stock. Sale Price: $149.95 This Black Nitride finished Left Handed Bolt Carrier group by Black Dirt Rifleworks is fully assembled and ready to drop into your rifle. Iron City Rifle Works G3 Competition Enhanced BCG - Copperhead . This process isn’t commonly used due to the expense in treating the bolt carrier twice. I need cost effective bolt carriers that are strong, protected and don’t wear fast. Even though I own a couple nickel boron bolt carrier groups, I don’t need a shiny parts to look cool. All manufacturing and coating is done by Toolcraft. If you are in the market for new AR-15 parts, specifically a bolt carrier group, you might be a little overwhelmed with the various treatments/coatings available today. This advanced low friction coating minimizes the need for lubricants. The bolt is made from enhanced 9310 steel while the carrier is made from 8620 tool steel. Choose a NiB Full Auto AR-15 BCG from FailZero, an F1 Firearms AR 15 bolt carrier group in Rose Gold TiCN or Black DLC, and adjustable model from Bootleg Inc., or a rugged, battle-proven Black Nitride AR 15 BCG from the innovators at Battle Arms Development, all at prices that make redesigning the function of your firearm highly affordable. LANTAC Black Nitride E-BCG Enhanced Bolt Carrier Group. It has a shinier finish than the standard matte finish of phosphate. 045-B2K630AA00 | Anderson Mfg. 9MM Black Nitride Bolt Carrier Group : Alternative Views: Price: $ 159.00. The carrier is fabricated from 8620 hardened steel. Out of stock. 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