Nickel Boron BCG Toolcraft 9310

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  • Toolcraft Nickel Boron BCG is, hands down, one of the best Nickel Boron BCGs on the market today. The bolt carrier group is one of the most important AR15 parts, critical to the safety and proper function of the AR15. Toolcraft understands this and precision manufactures these bolt carrier groups on state-of-the-art CNC machinery in North Carolina to such high standards that they are trusted by the U.S. Military and carry a lifetime warranty.

    A bolt carrier group is only as good as it’s bolt. These bolts are manufactured from 9310 Steel which is a modern ultra-high strength steel designed specifically for applications where high strength and durability are of paramount importance. 

    Nickel Boron is an extremely durable finish with self-lubricating properties so your AR15 cycles smoother and requires less lubrication. IMO, this may be the ultimate upgrade to the All-American AR15. And it looks good too! See our Nickel Boron BCG Collection.

    This is a 223/5.56/300 Blackout bolt carrier group.

    This AR BCG will not work with 6.5/6.8/308 etc.

    See also our Black Nitride BCGs and all AR15 Parts

    Buy with confidence! FREE SHIPPING + 30-DAY NO-HASSLE RETURNS.

  • Bolt Shot Peened; MPI
    Bolt Material 9310 Steel
    Bolt Finish Nickel Boron
    Caliber 223/5.56/300 Blackout
    Extractor O-ring Viton; Mil Spec
    Carrier Material 8620 Steel
    Carrier Finish Nickel Boron
    Carrier Design M16 Full Auto Style
    Gas Key Material 4130 Steel
    Cam Pin Material 4140 Steel
    Cam Pin Finish Nickel Boron
    Firing Pin Material 8740 Steel; Hard Chrome Plated

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  • Questions (8)

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Madison C.
United States

First purchase

Item is as described would buy again.

jonathan s.
United States

Bolt carrier group

Good fit and finish Good price for this product Thanks Jonathan

Keith T.
United States

Nickel Boron Bolt!

I havent had a chance to take my rifle too the range yet. But i can attest to the quality and beauty of this product. In the hand, it is hefty and feels like it was made to shoot its way out of hell. I will have to update my review after some good range time.

Scott Summers


Will definitely do business with again

Patrick Bonacci
New Jersey

Nickel Boron BCG

Item came fast, ordered on Friday recieved on Monday. Looks like its built good, no blemishes. Have not fired yet. If I don't have any issues I will likely order for my other ARs.