Toolcraft

TC556NIT-158

Toolcraft Black Nitride BCG C158

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  • Toolcraft makes some of the best AR15 bolt carrier groups on the market today. Precision manufactured on state-of-the-art CNC machinery in North Carolina, Toolcraft products are trusted by the U.S. Military and carry a lifetime warranty.

    A bolt carrier group is only as good as it’s bolt. This bolt is manufactured from Carpenter 158 steel, the same high strength steel that is specified by the US Military for M16 bolts. Also see our 9310 steel Black Nitride BCG.

    Finish is Black Nitride which is a metal treatment that produces a case-hardened surface. The resulting finish is extremely wear and corrosion resistant and very slick. This means less friction and smoother, more reliable function. The rich black color on these BCGs looks fantastic and cleans up much easier than a phosphate finish. Also see our Nickel Boron BCGs. See all AR15 parts.

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

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

    Buy with confidence! 30-DAY NO-HASSLE RETURNS.

  • Bolt Shot Peened; MPI
    Bolt Material Carpenter 158 Steel
    Bolt Finish Black Nitride
    Caliber 223/5.56/300 Blackout
    Extractor O-ring Viton; Mil Spec
    Carrier Material 8620 Steel
    Carrier Finish Black Nitride
    Carrier Design M16 Full Auto Style
    Gas Key Material 4130 Steel
    Cam Pin Material 4140 Steel
    Cam Pin Finish Black Nitride
    Firing Pin Material 8740 Steel; Hard Chrome Plated

Customer Reviews

Based on 59 reviews
5 Star
98% 
58
4 Star
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  • Questions (4)

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Dennis M.
United States
05/06/2018

Toolcraft BCG

Very nice product and fast shipping by Spicetac !!

Kyle S.
United States
05/05/2018

Great Carrier Group

This BCG is super slick and easy to clean. Fired over 500 rounds through it and it was flawless.

Brian L.
United States
04/21/2018

Service

Priced right and fast shipping. I will be buying from here again.

Carl L.
United States
04/17/2018

Great company

Nice owner, management, they are very appreciative. Excellent service and prompt. Would definetly use again and recommend.

Russell B.
United States
04/17/2018

Did my research, got the best materials made. Outstanding price and fast shipping.

Haven't used it yet but expect nothing but reliable service for the life of my rifle. I'm not using it for Combat but casual shooting to keep the skills sharp. Loved shooting rifles all my life.

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