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Toolcraft Chrome BCG 556

Maximum Purchase:
6 units

Out of Stock

Frequently bought together:


Free Shipping on all Toolcraft Bolt Carrier Groups! 

See also our Matte Chrome BCG.

We are extremely pleased to finally be able to offer a chrome bolt carrier group manufactured by Toolcraft! These BCGs exceeded our expectations.

The combination of state-of-the-art coating technology and improved coating materials makes these some of the finest chrome bolt carrier groups ever manufactured.

The Physical Vapor Deposition (PVD) process is used to apply a very thin (~3 micron) layer of Chromium Nitride (CrN) to all parts. The result is a BCG with the classic look of traditional chrome but with significantly increased performance.

Chromium Nitride (CrN) benefits

  • Twice as hard as traditional hard chrome
  • Uniform thickness, no buildup in corners
  • Adhesion is superior to traditional chrome plating
  • Low coefficient of friction 

These chrome BCGs feature Mil-Spec Carpenter 158 bolts, M-16 full-auto profile carriers and the famous Toolcraft lifetime warranty.

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Bolt Shot Peened; MPI
Bolt Material Carpenter 158 Steel
Bolt Finish Chromium Nitride (CrN), Polished
Caliber 223 | 5.56 NATO | 300 Blackout
Extractor O-ring Viton; Mil Spec
Carrier Material 8620 Steel, Toolcraft Proprietary
Carrier Finish Chromium Nitride (CrN), Polished
Carrier Design M16 Full Auto Style
Gas Key Material 4130 Steel
Cam Pin Material 4140 Steel
Cam Pin Finish Chromium Nitride (CrN), Polished
Extractor Material Tool Steel
Firing Pin Material 8740 Steel; Hard Chrome Plated
Manufacturer Toolcraft

Note: Some dealers are selling Toolcraft BCGs that have been finished after leaving Toolcraft. The finish on those BCGs would not be warrantied by Toolcraft. All Toolcraft bolt carrier groups sold by SpiceTac include the 100% no-questions-asked Toolcraft warranty.


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