Toolcraft Black Nitride AR15 BCG 556

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  • Toolcraft Black Nitride AR15 BCG 556 Lifetime Warranty
  • Toolcraft Black Nitride AR15 BCG 556 Profile


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.

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.

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

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

Bolt Shot Peened; MPI
Bolt Material 9310 or 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
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