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Toolcraft BCG Nickel Boron AR15 / M16 Auto Bolt Carrier Group 9310 or C158 MPI Tested

All manufacturing and coating is done by Toolcraft.

100% Made in USA and includes Lifetime Warranty from Toolcraft. If ever a problem, simply call Toolcraft and they will take excellent care of you with their no questions asked Lifetime Warranty.

Bolt Assembly:
​Bolt: AISI 9310 alloy steel or C158 
MPI Inspected
Extractor: Shot Peened Hardened D2 tool steel 
O-Ring: Mil-Spec 
Gas rings (3): Mil-Spec 
Finish: Nickel Boron

Bolt Carrier:
8620 steel
Heavy Duty M16 design
Grade 8 Gas Key Screws, Staked
Gas Key Material: 4140
Finish: Nickel Boron

Cam Pin:
8620 steel
Finish: Nickel Boron

Firing Pin:
mil-spec firing pin made from centerless ground 8740 steel, hard chrome coated

Wow! First time customer. I am extremely pleased with the quality of Toolcraft Nickel Boron BCG. Shipping times stated was 2-3 business days. I ordered this on July 23rd, received tracking number a few hours later. Part was in hand on July 26th. Shocked and very pleased with how quickly I received this. Thank you very much, Toms Tactical! I'll order again in the near future.


Great Toolcraft NiB BCG. Great communication
FAST Shipping. Will buy here again!!


Great product and great customer service. Overall really satisfy with purchase, highly recommended


Just received my 4th Tool Craft nickel boron BCG from Tom's. I am so impressed that I have replaced all my AR bolts with this Tool Craft model. It's works flawlessly. Smooth, easy to clean and needs little to no lubrication. And fast and free shipping.


This will be my new "go to" bcg. So smooth and it looks cool too.


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Toolcraft AR15 BCG Nickel Boron Bolt Carrier Group

  • Brand: Toolcraft
  • Availability: In Stock
  • $199.95
  • Free Shipping

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