Toolcraft 5.56 NATO Black Nitride Bolt Carrier Group


Toolcraft 5.56 NATO Black Nitride Bolt Carrier Group

$ 81.99$ 87.99

5.56 NATO / .223 Rem, 9310 Steel -or- Carpenter 158 Bolt, Black Nitride coated, Shot Peened, MPI inspected
SKU: TC556BCGBN Categories: , ,
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Toolcraft 5.56 NATO Black Nitride Bolt Carrier Group

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 available. 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 BCG’s.

Monmouth is the internet’s largest authorized stocking dealer of Toolcraft Products. 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.

Be sure to see all of our other growing selection of AR parts to include bolt carrier groups, barrels, AR15 and AR10 upper receivers, or our large selection of Berry’s, Nosler, and Hornady Bulk Bullets.

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

Lifetime Warranty & Made in the U.S.A

Product Specifications


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


Caliber: 223 Rem | 5.56 NATO
Bolt Material: 158 C -or- 9310 Steel
Extractor Material: 4140 Steel
O-Ring: Mil-Spec (3)
Cam Pin Material: 8620 Steel
Firing Pin Material: 416 Stainless Steel
Other: Shot Peened
Other: MPI Inspected

MSRP: Starting at $124.99

Additional information

Weight1.2 oz


Part Type

Bolt Carrier Group, Upper Receiver Parts




223 Wylde, 5.56 NATO

Coating Type

Black Nitride