Toolcraft AR15 Premium Nitride Bolt Carrier Group 5.56/.223

Was: $119.99
Now: $73.99
(36 reviews) Write a Review
Black Nitride

This item is currently Out of Stock.

Our carriers come with a variety of options and are all manufactured to customer print and specifications within our facility in Marion, North Carolina.

We manufacture over 9,000 carriers per week each available with Chrome/Phosphate, Nickel Boron or machined to satisfy all our customers.

Toolcraft has the ability to offer a wide variety of calibers and styles of BCG’s. If you prefer to apply a special coating, we can machine your order to the specifications that are required to allow for the coating buildup. If you decide to use this method, please let our knowledgeable customer service personnel know your intentions and we will machine it correctly to your application.  We can also sell just the carrier or a carrier with the key properly assembled and staked.

Toolcraft Black Nitride AR15 Bolt Carrier Group is a M16 Full Auto BCG, manufactured using a 9310 steel bolt, and a 8620 steel carrier.

Carrier Specifications

Material: 8620 Steel
Type:  M16 Full Auto (Preferred for most AR-15 builds)
Gas Key Material:  4130 Steel; Grade 8 Gas Key Screws
Coating:  Black Nitride

Bolt Specifications

Bolt Material:  9310 Steel
Extractor Material: 4140 Steel
Mil-Spec O-Ring
Mil-Spec Gas Rings (3)
Cam Pin Material: 8620 Steel
Firing Pin Material: 416 Stainless Steel
Other: MPI Inspected

Lifetime Warranty 


*Manufacturers Description of Coating*


Black Nitride is a process commonly referred to as SBN (Salt bath nitride) and QPQ (quench polish quench). These are a form of nitrocarburizing or a Thermo Chemical treatment that improves wear resistance and corrosion resistance of ferrous metals with little or no dimensional change which causes the hardening of steel. The chemical bath results in a deep dark black with a harder, more durable finish.

36 Reviews Hide Reviews Show Reviews

  • 5
    Excellent value and quality

    Posted by Jaime on Oct 9th 2019

    These Toolcraft BCGs have been flawless in thousands of rounds. Consistent fit, finish and quality for a value price.

  • 5
    Solid BCG for a great price

    Posted by Scott on Mar 23rd 2019

    Have used Toolcraft on my last two builds and I’m solid on their quality. Fit and finish are what you should expect, and for a great price. Shipping was fast and I wouldn’t hesitate to buy again!

  • 5
    Toolcraft BCG

    Posted by Bud on Mar 13th 2019

    Amazed how well these work! Also with this coating cleaning is soo much easier. Been using these instead of BCM bcg's

  • 5
    Consistent quality and value

    Posted by Jaime on Mar 8th 2019

    I just keep buying these BCGs because they are extremely well made, reliable and cost effective. I trust these for everything.

  • 5
    Great quality and value priced

    Posted by Jaime on Mar 3rd 2019

    Toolcraft is my go to for BCGs. Always excellent fit and finish, military contract manufacturer. Even nitride coating with no tool marks or sharp edges.

  • 5
    Toolcraft BCGs are the way to go

    Posted by Rob K on Mar 2nd 2019

    Unless you really want something flashy, the reliability, durability, and lifetime warranty of a ToolCraft BCG is the way to go and E-arms has the best shipped prices on them. 2nd order from them for one.

  • 5
    Solid quality BCG

    Posted by Jaime on Feb 21st 2019

    I am using these almost exclusively these days and e-arms has consistently had the best price. I have a dozen plus. All gas keys are staked properly. Digital calipers shows they are sized perfectly. Nitride finish is beautiful and smooth. Lifetime warranty is icing on the cake, but I've never has a failure. These are priced like a budget spare or training grade, but I'm confident in tens of thousands of rounds that these are duty grade for sure.

  • 3
    Cost effective bolt carrier group

    Posted by on Sep 1st 2018

    Looks well made bit the finish on the one I received looks more like really smooth cerakote as opposed to a nitride finish like the one pictured on the website. I have a couple of toolcraft nickel boron BCGs that look and function great so I assume this one will function well but I am still unsure about the finish on this one.

  • 5
    Excellent Fit and Finish

    Posted by Unknown on Aug 29th 2018

    This BCG has cycled everything I have thrown at it, and has a nice, even finish throughout. The gas key is properly staked, the bolt runs like butter, and the tolerances are fantastic. Great BCG, not just for the price, and E-ARMS has once again offered excellent service.