Toolcraft 5.56 NATO / 223 Rem Bolt Carrier Group - Black Nitride


Original price was: $199.99.Current price is: $65.00.

In Stock

In stock


Toolcraft 5.56/223 Bolt Carrier Group – Black Nitride

Simply the best 5.56 NATO bolt carrier group on the market! Available in either 9310 or C158 Steel Bolt.

Toolcraft 5.56 NATO Black Nitride Bolt Carrier Group is a Full-Auto M16 BCG manufactured using the finest U.S-sourced raw materials. The Black Nitride coating vastly increases the hardness of the steel, prevents corrosion, is highly resistant to wear, will not flake (it’s not a coating, it’s a bond), and has increased lubricity when compared to a phosphate-finished BCG. 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! If you’re after the newest high-performance BCG finish, ensure you take a look at the DLC Coated BCGs.

Arm or Ally is the internet’s largest authorized stocking dealer of Toolcraft Bolt Carrier Groups. When you want one of the best-looking and performing Bolt Carrier Groups available today, choose a Toolcraft. Toolcraft is a major OEM Manufacturer for the U.S. Military and several other rifle manufacturers. Forget the fancy logo at a $75 premium; Have confidence the heart of your AR Rifle is 100% made in the USA, and Toolcraft has you protected with their no-questions-asked Lifetime Warranty.


Product Specifications Carrier

  • Manufacturer: Toolcraft
  • Material: 8620 Steel
  • Type: M16 Full Auto
  • Gas Key Material: 4130 Steel; Grade 8 Gas Key Screws
  • Coating: Black Nitride


  • Caliber: 5.56 NATO | 223 Rem | 300 BLK
  • Bolt Material: 9310 Steel -or- C158Ê | Shot Peened Extractor
  • Material: 4140 Steel
  • O-Ring: Mil-Spec
  • Gas Rings: Mil-Spec (3)
  • Cam Pin Material: 8620 Steel
  • Firing Pin Material: 416 Stainless Steel
  • Other: MPI Inspected

Please Note: Some dealers utilize a third-party coating service to reduce costs. If a Toolcraft bolt carrier group is purchased from one of these dealers, Toolcraft will void the coating warranty. All Toolcraft Bolt Carrier Groups sold by Arm or Ally include the manufacturer’s 100% no-questions-asked warranty.

Product Information






223 Rem, 300 Blackout, 350 Legend, 5.56 NATO

Carrier Material

8620 Steel

Bolt Material

9310 Steel


QPQ Nitride




Standard AR15 components


MPI Inspected, Shot Peened, FA Serrations

Made in USA




Arm or Ally

Arm or Ally is a stocking dealer for all Aero Precision, Faxon Firearms, Ballistic Advantage, HOLOSUN, Toolcraft, Elftmann Tactical, Timney, TriggerTech, HIPERFIRE and was named the #1 Overall E-Commerce Dealer for Aero Precision Products in 2020!

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