Toolcraft

TC556NB-158

Nickel Boron BCG Toolcraft C158

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  • Toolcraft Nickel Boron BCG is one of the best BCGs on the market today. Precision manufactured on state-of-the-art CNC machinery in North Carolina, Toolcraft AR15 parts 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 Carpenter 158 steel, the same high strength steel specified by the US Military for M16 bolts. See also our 9310 steel Nickel Boron BCG

    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 here: Toolcraft Black Nitride BCG

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

  • Bolt Shot Peened; MPI
    Bolt Material Carpenter 158 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

Customer Reviews

Based on 72 reviews
5 Star
99% 
71
4 Star
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3 Star
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  • Reviews (72)
  • Questions (5)

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Jonathan B.
United States
07/21/2018

Purchasing is about perfect here

In stock, quick shipping, communications on status. Can't get any better.

Tim T.
United States
05/15/2018

Service at the speed of light!!!

The BEST. .....And I got CANDY!!!! But seriously the personal attention that I felt I received, and the speedy shipping as well as a great price = more orders from me!

David A.
United States
04/17/2018

Great Upgrade/Product at a Great Price!

I purchased the NiB BCG Toolcraft C158 for a new build...an Assault Wifle (AW-15) for my wife. I couldn't be happier with how it functions, looks, and (most importantly) how happy she is with the entire project.

rudolph r.
United States
03/20/2018

Service

Excellent service great product exceeded expectations

David G.
United States
03/06/2018

Great service

Experience was great ,customer service awesome ,shipped in a timely manner Will continue to do business with

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